[stable20] Cleanup bundle files before checking the rebuild

[PVince81]

Backport of #24865 to stable20

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 1980: failure

mariadb10.1-php7.2

Show full log

There were 2 warnings:

1) Test\DB\QueryBuilder\QueryBuilderTest::testExecuteWithParameterTooLarge
Cannot stub or mock class or interface "Doctrine\DBAL\Result" which does not exist

2) Test\DB\QueryBuilder\QueryBuilderTest::testExecuteWithParametersTooMany
Cannot stub or mock class or interface "Doctrine\DBAL\Result" which does not exist

--

There was 1 failure:

1) Test\SystemTag\SystemTagManagerTest::testUpdateTagDuplicate with data set #3 (array('one', false, false), array('two', true, true))
Failed asserting that exception of type "OCP\SystemTag\TagNotFoundException" matches expected exception "OCP\SystemTag\TagAlreadyExistsException". Message was: "Tag does not exist" at
/drone/src/lib/private/SystemTag/SystemTagManager.php:238
/drone/src/tests/lib/SystemTag/SystemTagManagerTest.php:382
.