Chore: Delete org model duplicates (#60940)

* Delete org model duplicates

* Fix lint

* Move OrgDetailsDTO to org pkg

pkg/api/admin_users_test.go

@@ -203,7 +203,7 @@ func TestAdminAPIEndpoint(t *testing.T) {
 				Password: testPassword,
 				OrgId:    nonExistingOrgID,
 			}
-			usrSvc := &usertest.FakeUserService{ExpectedError: models.ErrOrgNotFound}
+			usrSvc := &usertest.FakeUserService{ExpectedError: org.ErrOrgNotFound}
 			adminCreateUserScenario(t, "Should create the user", "/api/admin/users", "/api/admin/users", createCmd, usrSvc, func(sc *scenarioContext) {
 				sc.fakeReqWithParams("POST", sc.url, map[string]string{}).exec()
 				assert.Equal(t, 400, sc.resp.Code)