refactor: removing unused import, commented codes, improved cursor query (#69)

* chore: refactor code in some modules

* refactor: getTeamsOfUser functino

* chore: remove unused import

* chore: revert some changes

packages/hoppscotch-backend/src/admin/admin.model.ts

@@ -1,4 +1,4 @@
-import { ObjectType, ID, Field, ResolveField } from '@nestjs/graphql';
+import { ObjectType } from '@nestjs/graphql';
 
 @ObjectType()
 export class Admin {}