[MoE Refactor] Separate Router into OO Classes (#30623)

Signed-off-by: Bill Nell <bnell@redhat.com>

vllm/model_executor/layers/quantization/gptq_marlin.py

@@ -10,12 +10,12 @@ from safetensors.torch import _TYPES as _SAFETENSORS_TO_TORCH_DTYPE
 import vllm.model_executor.layers.fused_moe  # noqa
 from vllm import _custom_ops as ops
 from vllm.logger import init_logger
+from vllm.model_executor.layers.fused_moe import FusedMoERouter
 from vllm.model_executor.layers.fused_moe.config import (
     FusedMoEConfig,
     FusedMoEQuantConfig,
 )
 from vllm.model_executor.layers.fused_moe.fused_marlin_moe import fused_marlin_moe
-from vllm.model_executor.layers.fused_moe.fused_moe_router import FusedMoERouter
 from vllm.model_executor.layers.fused_moe.layer import (
     FusedMoE,
     FusedMoEMethodBase,