Remove incorrect keymapping

Turns out Snakebytes produce all 0s for their vendor / product IDs. This
somehow got the vendor / product ID of an international apple keyboard, which
will break them. Unfortunately, this also means we cannot map Snakebyte
controllers at all.

Relevant bug: https://code.google.com/p/android/issues/detail?id=58202

Change-Id: I09d246b1ab793ec04a19d558f6b98badac48b20f
Remove deleted keylayout from Makefile

Change-Id: I8aecc00861cf99d8e7278519f4e2e6fb726b7e17