function _nf_removed_hooks()
{
    global $wp_filter;
    $hooks = array('ninja_forms_insert_sub', 'nf_email_notification_after_settings', 'nf_edit_notification_settings', 'ninja_forms_edit_field_before_li', 'ninja_forms_edit_field_after_li', 'ninja_forms_edit_field_before_closing_li', 'ninja_forms_edit_field_before_registered', 'ninja_forms_edit_field_after_registered', 'ninja_forms_edit_field_before_ul', 'ninja_forms_edit_field_ul', 'ninja_forms_edit_field_after_ul', 'ninja_forms_email_admin', 'ninja_forms_email_user', 'ninja_forms_display_before_field_label', 'ninja_forms_display_field_label', 'ninja_forms_display_after_field_label', 'ninja_forms_display_field_help', 'ninja_forms_display_field_label', 'ninja_forms_display_field_help', 'nf_before_display_loading', 'ninja_forms_display_open_form_wrap', 'ninja_forms_display_form_title', 'ninja_forms_display_open_form_tag', 'ninja_forms_display_fields', 'ninja_forms_display_close_form_tag', 'ninja_forms_display_close_form_wrap', 'nf_notification_before_process', 'nf_save_notification', 'nf_sub_table_after_row_actions_trash', 'nf_sub_table_after_row_actions', 'nf_sub_table_before_row_actions_trash', 'nf_sub_table_before_row_actions', 'ninja_forms_after_import_form', 'ninja_forms_display_after_closing_field_wrap', 'ninja_forms_display_after_field_function', 'ninja_forms_display_after_field_label', 'ninja_forms_display_after_field', 'ninja_forms_display_after_opening_field_wrap', 'ninja_forms_display_before_closing_field_wrap', 'ninja_forms_display_before_field_function', 'ninja_forms_display_before_field_label', 'ninja_forms_display_before_field', 'ninja_forms_display_before_opening_field_wrap', 'ninja_forms_display_css', 'ninja_forms_save_admin_metabox_option', 'ninja_forms_save_admin_metabox', 'ninja_forms_save_admin_sidebar', 'ninja_forms_save_admin_tab', 'ninja_forms_before_pre_process', 'ninja_forms_display_after_fields', 'ninja_forms_display_after_form_title', 'ninja_forms_display_after_form_wrap', 'ninja_forms_display_after_open_form_tag', 'ninja_forms_display_before_fields', 'ninja_forms_display_before_form_title', 'ninja_forms_display_before_form_wrap', 'ninja_forms_display_before_form', 'ninja_forms_post_process', 'ninja_forms_pre_process', 'ninja_forms_process', 'nf_export_form_row', 'nf_notification_admin_js_vars', 'nf_success_message_locations', 'nf_notification_types', 'ninja_forms_admin_submissions_datepicker_args', 'ninja_forms_starter_form_contents', 'ninja_forms_preview_page_title', 'nf_input_limit_types', 'ninja_forms_edit_field_li_label', 'nf_edit_field_settings_sections', 'ninja_forms_use_post_fields', 'nf_general_settings_advanced', 'nf_new_form_defaults', 'ninja_forms_use_post_fields', 'ninja_forms_form_settings_basic', 'ninja_forms_form_settings_restrictions', 'nf_upgrade_handler_register', 'ninja_forms_save_sub', 'ninja_forms_export_subs_csv_file_name', 'ninja_forms_export_sub_label', 'ninja_forms_export_subs_label_array', 'ninja_forms_export_sub_pre_value', 'ninja_forms_export_sub_value', 'ninja_forms_export_subs_value_array', 'ninja_forms_csv_bom', 'ninja_forms_csv_delimiter', 'ninja_forms_csv_enclosure', 'ninja_forms_csv_terminator', 'ninja_forms_sub_table_row_actions', 'ninja_forms_csv_delimiter', 'ninja_forms_csv_enclosure', 'ninja_forms_csv_terminator', 'ninja_forms_admin_menu_capabilities', 'ninja_forms_email_all_fields_array', 'nf_email_user_values_title', 'ninja_forms_email_field_label', 'ninja_forms_email_user_value', 'ninja_forms_email_field_list', 'ninja_forms_admin_email_message_wpautop', 'ninja_forms_admin_email_from', 'ninja_forms_user_email_message_wpautop', 'ninja_forms_submission_csv_name', 'ninja_forms_success_msg', 'nf_delete_form_capabilities', 'ninja_forms_field', 'ninja_forms_display_field_type', 'ninja_forms_use_post_fields', 'ninja_forms_list_terms', 'ninja_forms_display_form_form_data', 'ninja_forms_admin_subject', 'ninja_forms_user_subject', 'ninja_forms_admin_email', 'ninja_forms_user_email', 'ninja_forms_save_msg', 'ninja_forms_display_script_field_data', 'ninja_forms_display_form_form_data', 'ninja_forms_enable_credit_card_field', 'ninja_forms_post_credit_card_field', 'ninja_forms_credit_card_field_desc_pos', 'ninja_forms_hide_cc_field', 'ninja_forms_display_list_options_span_class', 'nf_import_notification_meta', 'ninja_forms_labels/timed_submit_error', 'ninja_forms_form_list_template_function', 'nf_all_fields_field_value', 'nf_all_fields_table', 'nf_before_import_field', 'nf_delete_field_capabilities', 'nf_download_all_filename', 'nf_email_notification_attachment_types', 'nf_email_notification_attachments', 'nf_email_notification_process_setting', 'nf_general_settings_recaptcha', 'nf_new_field_capabilities', 'nf_notification_process_setting', 'nf_step_processing_labels', 'nf_sub_csv_bom', 'nf_sub_edit_status', 'nf_sub_human_time', 'nf_sub_table_row_actions', 'nf_sub_table_status', 'nf_sub_table_user_value_max_items', 'nf_sub_table_user_value_max_len', 'nf_sub_title_time', 'nf_subs_csv_field_label', 'nf_subs_csv_filename', 'nf_subs_csv_label_array_before_fields', 'nf_subs_csv_value_array', 'nf_subs_export_pre_value', 'nf_subs_table_qv', 'nf_success_msg', 'ninja_forms_admin_email_message_wpautop', 'ninja_forms_admin_metabox_rte', 'ninja_forms_ajax_url', 'ninja_forms_before_import_form', 'ninja_forms_cont_class', 'ninja_forms_credit_card_cvc_desc', 'ninja_forms_credit_card_cvc_label', 'ninja_forms_credit_card_exp_month_desc', 'ninja_forms_credit_card_exp_month_label', 'ninja_forms_credit_card_exp_year_desc', 'ninja_forms_credit_card_exp_year_label', 'ninja_forms_credit_card_name_desc', 'ninja_forms_credit_card_name_label', 'ninja_forms_credit_card_number_desc', 'ninja_forms_display_field_class', 'ninja_forms_display_field_desc_class', 'ninja_forms_display_field_processing_error_class', 'ninja_forms_display_fields_wrap_visibility', 'ninja_forms_display_form_visibility', 'ninja_forms_display_required_items_class', 'ninja_forms_display_response_message_class', 'ninja_forms_display_show_form', 'ninja_forms_dropdown_open_tag', 'ninja_forms_dropdown_placeholder', 'ninja_forms_edit_field_rte', 'ninja_forms_field_post_process_user_value', 'ninja_forms_field_pre_process_user_value', 'ninja_forms_field_process_user_value', 'ninja_forms_field_shortcode', 'ninja_forms_field_wrap_class', 'ninja_forms_fields_wrap_class', 'ninja_forms_form_class', 'ninja_forms_form_list_forms', 'ninja_forms_form_wrap_class', 'ninja_forms_label_class', 'ninja_forms_labels/currency_symbol', 'ninja_forms_labels/date_format', 'ninja_forms_labels/honeypot_error', 'ninja_forms_labels/invalid_email', 'ninja_forms_labels/javascript_error', 'ninja_forms_labels/password_mismatch', 'ninja_forms_labels/process_label', 'ninja_forms_labels/req_div_label', 'ninja_forms_labels/req_error_label', 'ninja_forms_labels/req_field_error', 'ninja_forms_labels/req_field_symbol', 'ninja_forms_labels/spam_error', 'ninja_forms_display_fields_array');
    foreach ($hooks as $hook) {
        apply_filters($hook, '');
        // add_action() is just a wrapper for add_filter(), so use add_filter() for both.
        if (!isset($wp_filter[$hook]) || !$wp_filter[$hook]) {
            continue;
        }
        Ninja_Forms::deprecated_notice($hook, '3.0', null);
    }
}