How to Remove this battery symbol of head in Android 4.0.4 device Sony Xperia MT27i? 0.4 device Sony Xperia MT27i For development use.
I describe one screen the here, and display my question:


Image Screen with red mark (click image to enlarge)

I want to remove the icon from my device screen. How can I do that?
Its power saving symbol and you have to disable from Setting  for remove symbol.