address Chris, remove fmath-errno as it is toolchain-dependent

Author: bob80905

clang/test/Options/Gis.hlsl

@@ -1,11 +1,12 @@
 // RUN: %clang_dxc -T lib_6_4 -Gis %s 2>&1 -### | FileCheck -check-prefix=Gis %s
 // RUN: %clang_dxc -T lib_6_4 %s 2>&1 -### | FileCheck -check-prefix=NO_Gis %s
-// RUN: not %clang_dxc -T lib_6_4 /Gis gibberish -### %s 2>&1 | FileCheck -check-prefix=CHECK-ERR %s
 
-// Gis: "-fmath-errno" "-ffp-contract=off" "-frounding-math" "-ffp-exception-behavior=strict" "-complex-range=full"
+// Gis: "-ffp-contract=off" "-frounding-math" "-ffp-exception-behavior=strict" "-complex-range=full"
 // assert expected floating point options are present
-// NO_Gis-NOT: "-fmath-errno" "-ffp-contract=off" "-frounding-math" "-ffp-exception-behavior=strict" "-complex-range=full"
-// CHECK-ERR: error: no such file or directory: 'gibberish'
+// NO_Gis-NOT: "-ffp-contract=off" 
+// NO_Gis-NOT: "-frounding-math" 
+// NO_Gis-NOT: "-ffp-exception-behavior=strict" 
+// NO_Gis-NOT: "-complex-range=full"
 float4 main(float4 a : A) : SV_TARGET
 {
   return -a.yxxx;