Remove gccbug detection. GCC is good now.

testsuite/libffi.bhaible/bhaible.exp

@@ -19,7 +19,6 @@ libffi-init
 
 global srcdir subdir
 global compiler_vendor
-global has_gccbug
 
 # The conversion of this testsuite into a dejagnu compatible testsuite
 # was done in a pretty lazy fashion, and requires the use of compiler

testsuite/libffi.bhaible/test-call.c

@@ -16,8 +16,6 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 **/
 
-/* { dg-do run { xfail gccbug } }*/
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

testsuite/libffi.bhaible/test-callback.c

@@ -16,8 +16,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/* { dg-do run { xfail gccbug } }*/
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>