[X86][AVX2] Removed FIXME comment and regenerated test.

The comment talked about replacing vpmovzxwd+vpslld+vpsrad with vpmovsxwd - which isn't valid as we're sign extending a <8 x i1> bool vector not an all/nobits <8 x i16>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292948 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed