testsuite: do not try to add -m32 (PR 89916)

	PR testsuite/89916
	* gcc.dg/pr86928.c: Do not attempt to add -m32.

From-SVN: r270087

gcc/testsuite/ChangeLog

+2019-04-02  Alexander Monakov  <amonakov@ispras.ru>
+
+	PR testsuite/89916
+	* gcc.dg/pr86928.c: Do not attempt to add -m32.
+
 2019-04-02  Andreas Krebbel  <krebbel@linux.ibm.com>
 
 	* gcc.target/s390/zvector/bswap-and-replicate-1.c: New test.

gcc/testsuite/gcc.dg/pr86928.c

 /* { dg-do compile { target powerpc*-*-* ia64-*-* i?86-*-* x86_64-*-* } } */
 /* { dg-options "-O2 -fnon-call-exceptions -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops -fselective-scheduling -fno-if-conversion -fno-tree-dce -w" } */
-/* { dg-additional-options "-m32" { target powerpc*-*-* } } */
 
 int kn;