IDE-299 Add correct memory cleanup

Author: Kale2605

catroid/src/androidTest/java/org/catrobat/catroid/test/content/bricks/LoadProjectAIExtensionSettingsTest.kt

@@ -122,6 +122,7 @@ import org.catrobat.catroid.formulaeditor.Sensors.SPEECH_RECOGNITION_LANGUAGE
 import org.catrobat.catroid.formulaeditor.Sensors.TEXT_FROM_CAMERA
 import org.catrobat.catroid.io.XstreamSerializer
 import org.catrobat.catroid.test.utils.KtTestUtils
+import org.catrobat.catroid.test.utils.TestUtils
 import org.catrobat.catroid.ui.MainMenuActivity
 import org.catrobat.catroid.ui.settingsfragments.SettingsFragment.SETTINGS_SHOW_AI_FACE_DETECTION_SENSORS
 import org.catrobat.catroid.ui.settingsfragments.SettingsFragment.SETTINGS_SHOW_AI_POSE_DETECTION_SENSORS
@@ -653,6 +654,7 @@ class LoadProjectAIExtensionSettingsTest(
     @Throws(Exception::class)
     fun tearDown() {
         restoreInitialSettings()
+        TestUtils.deleteProjects(projectName)
     }
 
     @Test