Revert "[Feature] Integrate new deepgemm (vllm-project#19820)"

This reverts commit c6e3bba.

Signed-off-by: yewentao256 <[email protected]>

Author: yewentao256

benchmarks/kernels/benchmark_moe.py

@@ -86,9 +86,6 @@ def benchmark_config(
             (num_experts, 2 * shard_intermediate_size), dtype=torch.float32
         )
         w2_scale = torch.randn((hidden_size, num_experts), dtype=torch.float32)
-    if use_deep_gemm:
-        # we use the default block shape for deepgemm
-        block_quant_shape = [128, 128]
     if use_fp8_w8a8:
         if block_quant_shape:
             block_n, block_k = block_quant_shape[0], block_quant_shape[1]