chore: Remove useless legacy autoloader for tests

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

lib/autoloader.php

@@ -95,10 +95,6 @@ class Autoloader {
 			} catch (AppPathNotFoundException) {
 				// App not found, ignore
 			}
-		} elseif ($class === 'Test\\TestCase') {
-			// This File is considered public API, so we make sure that the class
-			// can still be loaded, although the PSR-4 paths have not been loaded.
-			$paths[] = \OC::$SERVERROOT . '/tests/lib/TestCase.php';
 		}
 		return $paths;
 	}

lib/base.php

@@ -601,9 +601,6 @@ class OC {
 		self::$loader = new \OC\Autoloader([
 			OC::$SERVERROOT . '/lib/private/legacy',
 		]);
-		if (defined('PHPUNIT_RUN')) {
-			self::$loader->addValidRoot(OC::$SERVERROOT . '/tests');
-		}
 		spl_autoload_register([self::$loader, 'load']);
 		$loaderEnd = microtime(true);
 

tests/lib/AutoLoaderTest.php

@@ -24,12 +24,6 @@ class AutoLoaderTest extends TestCase {
 		], $this->loader->findClass('OC_JSON'));
 	}
 
-	public function testLoadTestTestCase(): void {
-		$this->assertEquals([
-			\OC::$SERVERROOT . '/tests/lib/TestCase.php'
-		], $this->loader->findClass('Test\TestCase'));
-	}
-
 	public function testLoadCore(): void {
 		$this->assertEquals([
 			\OC::$SERVERROOT . '/lib/private/legacy/foo/bar.php',

tests/lib/Files/Storage/Wrapper/QuotaTest.php

@@ -12,8 +12,6 @@ use OC\Files\Cache\CacheEntry;
 use OC\Files\Storage\Local;
 use OCP\Files;
 
-\OC::$loader->load('\OC\Files\Filesystem');
-
 /**
  * Class QuotaTest
  *