remove testing delay

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

src/main/java/com/owncloud/android/datamodel/ThumbnailsCacheManager.java

@@ -284,12 +284,6 @@ public final class ThumbnailsCacheManager {
 
             file = (OCFile) params[0];
 
-            try {
-                Thread.sleep(8000);
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-            }
-
             try {
                 if (account != null) {
                     OwnCloudAccount ocAccount = new OwnCloudAccount(account, MainApp.getAppContext());

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

@@ -512,12 +512,6 @@ public class PreviewImageFragment extends FileFragment implements Injectable {
                 return null;
             }
 
-            try {
-                Thread.sleep(8000);
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-            }
-
             Bitmap bitmapResult = null;
             Drawable drawableResult = null;
             OCFile ocFile = params[0];