re PR testsuite/78740 (test case powerpc/pr78691-ppc.c fails starting with its introduction in r243335)

2016-12-09  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR testsuite/78740
	* gcc.target/powerpc/pr78691-ppc.c: Remove -m32.

From-SVN: r243506