Staging: rtl8188eu: Fix warning of space before tabs.

This patch fixes the warning of "please, no space before tabs" in file
rtw_cmd.c. I have also removed couple of lines of code that was
commented and probably left from the previous version.

Signed-off-by: Elena Oat <oat.elena@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>