codacy: Avoid unused local variables such as 'userId'.

codacy: Avoid unused imports

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

src/main/java/com/owncloud/android/ui/activity/FileDisplayActivity.java

@@ -2653,9 +2653,6 @@ public class FileDisplayActivity extends FileActivity
             return;
         }
 
-        AccountManager am = AccountManager.get(this);
-        String userId = am.getUserData(getAccount(), AccountUtils.Constants.KEY_USER_ID);
-
         FileDataStorageManager storageManager = getStorageManager();
 
         if (storageManager == null) {

src/main/java/com/owncloud/android/ui/preview/PreviewTextFragment.java

@@ -31,7 +31,6 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
-import android.widget.LinearLayout;
 import android.widget.ProgressBar;
 import android.widget.RelativeLayout;
 import android.widget.TextView;