Minor PA GAS testsuite fix

[law@redhat.com]

  > No, what you've done in removing the whitespace before the .import, is
  > turn it into a label.  hppa defines LABELS_WITHOUT_COLONS.  Please put
  > the test back as it was, and remove the xfail.
This is *sooo* much fun.

HP's assembler accepts that testfile as-is and by some miracle I don't
understand doesn't interpret the .import as a label.  

At this point I don't care enough about this to argue or figure out what
HP has decreed is right for their insane assembler syntax.  I'll just
revert my change.

jeff