ContactProvider: add another check for local accounts

This check gets called when account rows get cleaned up and we need to
make sure not to delete our new local contacts account.

Change-Id: I56d93134cd68a94f5c31b005e6c687ebcabdc070
Signed-off-by: Roman Birg <roman@cyngn.com>
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_packages_providers_ContactsProvider into cm-11.0