lint: remove deprecated/removed ApplicationTestCase reference

src/androidTest/java/com/owncloud/android/AbstractIT.java

@@ -7,7 +7,6 @@ import android.accounts.OperationCanceledException;
 import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.support.test.runner.AndroidJUnit4;
-import android.test.ApplicationTestCase;
 
 import com.owncloud.android.datamodel.FileDataStorageManager;
 import com.owncloud.android.lib.common.OwnCloudClient;
@@ -26,7 +25,7 @@ import java.io.IOException;
  */
 
 @RunWith(AndroidJUnit4.class)
-public abstract class AbstractIT extends ApplicationTestCase<MainApp> {
+public abstract class AbstractIT {
 
     protected static OwnCloudClient client;
     protected static Account account;
@@ -36,10 +35,6 @@ public abstract class AbstractIT extends ApplicationTestCase<MainApp> {
     private static final String password = "test";
     private static final String baseUrl = "server";
 
-    public AbstractIT() {
-        super(MainApp.class);
-    }
-
     @BeforeClass
     public static void beforeAll() {
         try {

src/androidTest/java/com/owncloud/android/FileIT.java

@@ -9,10 +9,12 @@ import com.owncloud.android.operations.common.SyncOperation;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import static junit.framework.TestCase.assertTrue;
+import static org.junit.Assert.assertNull;
+
 /**
  * Tests related to file operations
  */
-
 @RunWith(AndroidJUnit4.class)
 public class FileIT extends AbstractIT {
 

src/androidTest/java/com/owncloud/android/UploadIT.java

@@ -11,6 +11,8 @@ import com.owncloud.android.utils.FileStorageUtils;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import static junit.framework.TestCase.assertTrue;
+
 /**
  * Tests related to file uploads
  */