shamu: prevent double-definition of modules caused by symlink hacky hack hack

Change-Id: I56cf7506ff923b4d0bffc195b7bf2405456e4758
shamu: remove intentionally broken symlink from vendor/motorola => vendor/moto flailing

apparently, copy-file in the manifest follows symlinks :-( alternate fix implemented -- see https://github.com/VanirAOSP/vendor_moto

Change-Id: I0434bd8adecaac03522b51286b36e9e1dca2d71c