test: remove double setup from share tests

Signed-off-by: Robin Appelman <robin@icewind.nl>

Author: icewind1991

apps/files_sharing/tests/ApiTest.php

@@ -151,7 +151,6 @@ private function createOCS($userId) {
 	}
 
 	public function testCreateShareUserFile(): void {
-		$this->setUp(); // for some reasons phpunit refuses to do this for us only for this test
 		$ocs = $this->createOCS(self::TEST_FILES_SHARING_API_USER1);
 		$result = $ocs->createShare($this->filename, Constants::PERMISSION_ALL, IShare::TYPE_USER, self::TEST_FILES_SHARING_API_USER2);
 		$ocs->cleanup();
@@ -794,7 +793,6 @@ public function XtestGetShareFromFolderReReShares() {
 	 * test multiple shared folder if the path gets constructed correctly
 	 */
 	public function testGetShareMultipleSharedFolder(): void {
-		$this->setUp();
 		$node1 = $this->userFolder->get($this->folder . $this->subfolder);
 		$share1 = $this->shareManager->newShare();
 		$share1->setNode($node1)