roll back splitkv

include/ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_combine_pipeline.hpp

@@ -95,8 +95,6 @@ struct BlockFmhaFwdSplitKVCombinePipeline
             {
                 constexpr std::array occupancy{2, 2, 2, 2, 2, 1};
                 return occupancy[detail::log2<kMaxSplits>::value - 2];
-            } else if constexpr(kHeadDimV <= 512) {
-                return 1;
             }
         }
     }();

include/ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_pipeline_qr_ks_vs.hpp

@@ -96,10 +96,6 @@ struct BlockFmhaFwdSplitKVPipelineQRKSVS
             {
                 return 1;
             }
-            else if constexpr(kQKHeaddim <= 512) 
-            {
-                return 1;
-            }
         }
     }();