oeqa/syslog: Removed a pointless testcase and added skip for another.
The testcase syslog --help was rather useless and also causing problems
on images where syslog was non-busybox, like LSB images so I removed it.
Added a skip condition for TC 202 for the same reason. If syslog is
non-busybox then the test skips.
Signed-off-by: Lucian Musat <george.l.musat@intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>