[mlir][Transform] Remove notifyOperationErased workaround

D144193 (#66771) has been merged.

Author: matthias-springer

mlir/lib/Dialect/Transform/IR/TransformInterfaces.cpp

@@ -1278,14 +1278,11 @@ void transform::TrackingListener::notifyMatchFailure(
 }
 
 void transform::TrackingListener::notifyOperationErased(Operation *op) {
-  // TODO: Walk can be removed when D144193 has landed.
-  op->walk([&](Operation *op) {
-    // Remove mappings for result values.
-    for (OpResult value : op->getResults())
-      (void)replacePayloadValue(value, nullptr);
-    // Remove mapping for op.
-    (void)replacePayloadOp(op, nullptr);
-  });
+  // Remove mappings for result values.
+  for (OpResult value : op->getResults())
+    (void)replacePayloadValue(value, nullptr);
+  // Remove mapping for op.
+  (void)replacePayloadOp(op, nullptr);
 }
 
 void transform::TrackingListener::notifyOperationReplaced(