remove EULA on application start

The GPL isn't intended for end users, so shouldn't be used as a EULA.
We should of course include a copy of the GPL in the source and within
the app itself.  That should probably be done as part of #399

git-svn-id: https://android.svn.wordpress.org/trunk@904 a6565c4b-a94d-4d28-bb26-aa9e5ab542c0