Recently Google auto merge permission from Google Service to final release apk. Some one ask here Why are permissions being automatically added to my AndroidManifest when in
Add attribute tools:node with a value of remove to your manifest:
tools:node
remove
... ...
See http://tools.android.com/tech-docs/new-build-system/user-guide/manifest-merger#TOC-tools:node-markers
Don't forget to add the tools namespace to the root element of your manifest.
tools