[X86] Remove SSE/AVX patterns for AND/XOR/OR/ANDN that checked for the inputs...

[X86] Remove SSE/AVX patterns for AND/XOR/OR/ANDN that checked for the inputs being bitcasted from floating point types.

There's really no reason to do this we should just let isel pick the integer version and let the execution dependency fixing pass take care of moving to FP if necessary.

It's not very reliable to look for bitcasts at the edges of patterns. If for some reason one input was bitcasted and the other wasn't, or if one was a v4f32 bitcast and one was a v2f64 bitcast, we would have fallen back to the integer pattern anyway.

llvm-svn: 311138