evita: remove unused input device configs

These are already included in frameworks/base/data/keyboards. This
cleans up a little noise when running lunch.

Change-Id: I01a436c6e32cec2e8ee59d12758c89db85670294
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_htc_evita into cd-4.4