Fix assert unreachable, remove unused variables (#13753)

Small code cleanup

packages/twenty-server/src/modules/workspace-member/query-hooks/workspace-member-delete-one.pre-query.hook.ts

@@ -32,7 +32,7 @@ export class WorkspaceMemberDeleteOnePreQueryHook
 
   async execute(
     authContext: AuthContext,
-    objectName: string,
+    _objectName: string,
     payload: DeleteOneResolverArgs,
   ): Promise<DeleteOneResolverArgs> {
     const targettedWorkspaceMemberId = payload.id;

packages/twenty-server/src/modules/workspace-member/query-hooks/workspace-member-update-one.pre-query.hook.ts

@@ -28,7 +28,7 @@ export class WorkspaceMemberUpdateOnePreQueryHook
 
   async execute(
     authContext: AuthContext,
-    objectName: string,
+    _objectName: string,
     payload: UpdateOneResolverArgs,
   ): Promise<UpdateOneResolverArgs> {
     const workspace = authContext.workspace;