configure: remove bogus LIBVIRT_GETTEXT macro reference
configure: remove bogus LIBVIRT_GETTEXT macro reference

The LIBVIRT_GETTEXT macro was an artifact of patch development and
was later renamed to LIBVIRT_CHECK_NLS. This cruft causes configure
to print out

./configure: line 75084: LIBVIRT_GETTEXT: command not found

but fortunately this is non-fatal

Reported-by: Martin Kletzander <e82f23e74d43760279ebcc505dac4ae70d5627d0@redhat.com>
Signed-off-by: Daniel P. Berrangé <bb938cf255e055ff3507f2627d214e8e62118fcf@redhat.com>

eskultety/libvirt,eskultety/libvirt,jfehlig/libvirt,eskultety/libvirt,crobinso/libvirt,nertpinx/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,andreabolognani/libvirt,jardasgit/libvirt,eskultety/libvirt,jfehlig/libvirt,libvirt/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,olafhering/libvirt,crobinso/libvirt,nertpinx/libvirt,olafhering/libvirt,fabianfreyer/libvirt,zippy2/libvirt,olafhering/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,crobinso/libvirt,zippy2/libvirt,nertpinx/libvirt,libvirt/libvirt,zippy2/libvirt,andreabolognani/libvirt,eskultety/libvirt,jardasgit/libvirt,andreabolognani/libvirt,nertpinx/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,zippy2/libvirt,jfehlig/libvirt,libvirt/libvirt,jardasgit/libvirt,jardasgit/libvirt,crobinso/libvirt,libvirt/libvirt,olafhering/libvirt