Removed unused imports...

Author: virxkane

android/src/org/coolreader/CoolReader.java

@@ -43,7 +43,6 @@
 
 import android.Manifest;
 import android.content.BroadcastReceiver;
-import android.content.ContentResolver;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;