rm stale valid_target_type comment in mathesar_ui

Author: Anish9901

mathesar_ui/src/stores/abstract-types/abstractTypeCategories.ts

@@ -269,13 +269,6 @@ export function getAbstractTypeForDbType(dbType: DbType): AbstractType {
   return abstractTypeOfDbType;
 }
 
-/**
- * For columns, allowed db types should be an intersection of valid_target_types
- * and dbTypes of each abstract type. i.e
- * const allowedDBTypes = intersection(dbTargetTypeSet, abstractType.dbTypes);
- *
- * However, it is not handled here yet, since it requires additional confirmation.
- */
 export function getAllowedAbstractTypesForDbTypeAndItsTargetTypes(
   dbType: DbType,
   targetDbTypes: DbType[],