put this in your onCreate() method.
getActionBar().setIcon(new ColorDrawable(getResources().getColor(android.R.color.transparent)));
Pregunta
How to remove pointed icon in Navigation Drawer, I just playing with Navigation Drawer, I just wanted to maintain only one icon and the title in center.
Solución
put this in your onCreate() method.
getActionBar().setIcon(new ColorDrawable(getResources().getColor(android.R.color.transparent)));