Fix per file ruff ignores related to simplification (#26259)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/model_executor/layers/fused_moe/modular_kernel.py

@@ -948,10 +948,7 @@ class FusedMoEModularKernel(torch.nn.Module):
         """
 
         a1 = hidden_states
-        if inplace and self.shared_experts is None:
-            output = a1
-        else:
-            output = torch.zeros_like(a1)
+        output = a1 if inplace and self.shared_experts is None else torch.zeros_like(a1)
 
         local_num_experts = w1.size(0)
         if global_num_experts == -1: