remove unnecessary startTransaction and commit calls

src/Controller/LoginController.php

@@ -226,16 +226,12 @@ class LoginController
         $passwordResetter->setToken($token);
         $passwordResetter->setExpiresDate($expires);
 
-        \Container::$dbConnection->startTransaction();
-
         if ($existingResetter !== null) {
             $this->pdm->deleteFromDb($existingResetter);
         }
 
         $this->pdm->saveToDb($passwordResetter);
 
-        \Container::$dbConnection->commit();
-
         $this->sendPasswordResetEmail($user->getEmail(), $token, $expires);
 
         return new JsonContent(['success' => true]);
@@ -275,8 +271,6 @@ class LoginController
             return new JsonContent(['error' => ['errorText' => 'The given passwords do not match.']]);
         }
 
-        \Container::$dbConnection->startTransaction();
-
         $this->pdm->deleteFromDb($resetter);
 
         $user = $this->userRepository->getById($resetter->getUserId());
@@ -284,8 +278,6 @@ class LoginController
 
         $this->pdm->saveToDb($user);
 
-        \Container::$dbConnection->commit();
-
         $this->request->setUser($user);
 
         $this->deleteRedirectUrl();