Login: remove unused function (#78442)

* Move test to the db so we test the queries and not just testing the mock

* Remove unused function and dependencies

* Remove unused functions from the database

* Add some integration tests

pkg/services/authn/authnimpl/sync/user_sync_test.go

@@ -33,7 +33,6 @@ func TestUserSync_SyncUserHook(t *testing.T) {
 	userProtection := &authinfoservice.OSSUserProtectionImpl{}
 
 	authFakeNil := &logintest.AuthInfoServiceFake{
-		ExpectedUser:  nil,
 		ExpectedError: user.ErrUserNotFound,
 		SetAuthInfoFn: func(ctx context.Context, cmd *login.SetAuthInfoCommand) error {
 			return nil
@@ -43,7 +42,6 @@ func TestUserSync_SyncUserHook(t *testing.T) {
 		},
 	}
 	authFakeUserID := &logintest.AuthInfoServiceFake{
-		ExpectedUser:  nil,
 		ExpectedError: nil,
 		ExpectedUserAuth: &login.UserAuth{
 			AuthModule: "oauth",
@@ -68,7 +66,6 @@ func TestUserSync_SyncUserHook(t *testing.T) {
 	}}
 
 	userServiceNil := &usertest.FakeUserService{
-		ExpectedUser:  nil,
 		ExpectedError: user.ErrUserNotFound,
 		CreateFn: func(ctx context.Context, cmd *user.CreateUserCommand) (*user.User, error) {
 			return &user.User{