[HLSL] Remove the unused uniformity bit from `llvm.dx.resource.handlefrombinding`

The uniformity bit in `llvm.dx.resource.handlefrombinding` is currently always set to 0 and we have no plans to use it in the future.  We should remove it.

See [DXILResources.rst](https://github.com/llvm/llvm-project/blob/main/llvm/docs/DirectX/DXILResources.rst) ->Resource Operations -> Resource Handles.