Delete sgl-kernel AOT router GEMM and fused A GEMM (#30280)

Co-authored-by: Brayden Zhong <brayden@radixark.ai>
Co-authored-by: root <root@sgl-b300-inference.datacrunch.io>

sgl-kernel/python/sgl_kernel/__init__.py

@@ -55,7 +55,6 @@ else:
     )
     from sgl_kernel.gemm import (
         awq_dequantize,
-        dsv3_fused_a_gemm,
         fp8_scaled_mm,
         gptq_gemm,
         gptq_shuffle,
@@ -160,8 +159,6 @@ else:
         "copy_to_gpu_no_ce",
         "cutlass_mla_decode",
         "cutlass_mla_get_workspace_size",
-        "dsv3_fused_a_gemm",
-        "dsv3_router_gemm",
         "dsv4_fused_k_norm_rope_flashmla",
         "dsv4_fused_q_indexer_rope_hadamard_quant",
         "dsv4_fused_q_norm_rope",