Remove unneeded lines from manifest

Superuser is forked now, no need for this message

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: Iaaccd8b7aa8c23a183af29ddedd0543b0375d284
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android into default