don't show back button to connection info dialog from record overview

src/de/tudarmstadt/informatik/hostage/ui2/fragment/ConnectionInfoDialogFragment.java

@@ -74,7 +74,6 @@ public class ConnectionInfoDialogFragment extends DialogFragment {
 				RecordOverviewFragment recordOverviewFragment = new RecordOverviewFragment();
 				recordOverviewFragment.setFilter(filter);
 				recordOverviewFragment.setGroupKey("ESSID");
-				recordOverviewFragment.setUpNavigatible(true);
 
 				MainActivity.getInstance().injectFragment(recordOverviewFragment);
 			}