Revert "[X86][AVX10.2] Support YMM rounding new instructions (#101825)" (#132362)
This reverts commit 0dba5381d8c8e4cadc32a067bf2fe5e3486ae53d.
YMM rounding was removed from AVX10 whitepaper. Ref:
https://cdrdv2.intel.com/v1/dl/getContent/784343
The MINMAX and SATURATING CONVERT instructions will be removed as a
follow up.