Remove EnableSecureParamsV2 flag (#3550)

Author: mournfulCoroner

src/server/components/features/features-list/EnableSecureParamsV2.ts

@@ -73,8 +73,6 @@ export enum Feature {
     EnableCustomDashMargins = 'EnableCustomDashMargins',
     /** Enabled Dash elements auto-focus */
     EnableDashAutoFocus = 'EnableDashAutoFocus',
-    /** Enable new secure parameters behavior */
-    EnableSecureParamsV2 = 'EnableSecureParamsV2',
     /** Enable export settings in connections & datasets */
     EnableExportSettings = 'EnableExportSettings',
     /** Enable updating dataset settings by action ('load_preview_by_default' | 'template_enabled' | 'data_export_forbidden') */