TTY: msm_smd_tty: Remove unnecessary lines in header

It is no longer necessary to display the location of the file in the
header. In addition, some superfluous line are present in the header.

Remove the unnecessary lines.

Change-Id: I70209a106b54256ad726b2530e49e1876ec9bd7a
Signed-off-by: Steven Cahail <scahail@codeaurora.org>