msm: reap unused kernel files

This change removes source files from the kernel tree that
were not being used during make.

This change is propagated from msm-3.10 kernel.
(commit: f06163e6d0b0c001ed79275cbe522d0b62ace3ed
msm: reap unused kernel files)

Change-Id: I5132854367330a9b47f678409cbe6a45f2b5abb3
Signed-off-by: Sudhakar Manapati <smanap@codeaurora.org>