Remove flag relation select (#3588)

* Remove feature flag on relation and select

* Move packages back to twenty-server to enable smaller build without using nx

* Fix package.json

packages/twenty-front/src/modules/workspace/types/FeatureFlagKey.ts

@@ -1,7 +1,4 @@
 export type FeatureFlagKey =
   | 'IS_MESSAGING_ENABLED'
   | 'IS_QUICK_ACTIONS_ENABLED'
-  | 'IS_RATING_FIELD_TYPE_ENABLED'
-  | 'IS_RELATION_FIELD_CARD_ENABLED'
-  | 'IS_RELATION_FIELD_TYPE_ENABLED'
-  | 'IS_SELECT_FIELD_TYPE_ENABLED';
+  | 'IS_RATING_FIELD_TYPE_ENABLED';