Remove useless code from svn_wc__maybe_set_read_only().  A follow-up to r1084897.
Remove useless code from svn_wc__maybe_set_read_only().  A follow-up to
r1084897.

* subversion/libsvn_wc/translate.c
  (svn_wc__maybe_set_read_only): It doesn't make sense to operate on an
    unversioned path so just return the error if that is the case. The
    comment here said "we still want to set it to read-only" which didn't
    make sense (because we can't query the svn:needs-lock property of an
    unversioned file) and didn't match the code. I also checked and found
    that this condition never occurs in a test suite run.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion