remove uses of self.fused_experts

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

Author: bnellnm

vllm/model_executor/layers/fused_moe/layer.py

@@ -342,7 +342,6 @@ def using_modular_kernel(self) -> bool:
         return True
 
     @property
-    @abstractmethod
     def supports_eplb(self) -> bool:
         return self._supports_eplb