diff --git a/include/mlir-hlo/utils/hlo_utils.h b/include/mlir-hlo/utils/hlo_utils.h
index 5513dc6..74ea9c9 100644
--- a/include/mlir-hlo/utils/hlo_utils.h
+++ b/include/mlir-hlo/utils/hlo_utils.h
@@ -83,11 +83,6 @@ enum ScalarLimit {
 // Requires `ty` to be either FloatType or IntegerType.
 DenseElementsAttr GetScalarLimitOfType(Type ty, ScalarLimit limit);
 
-// Given `op_name` from LMHLO, returns the corresponding op name in MHLO.
-// Returns empty string if no such op exists.
-std::string LmhloToMhloOpName(llvm::StringRef op_name,
-                              mlir::MLIRContext* context);
-
 }  // namespace hlo
 }  // namespace mlir
 
diff --git a/lib/utils/hlo_utils.cc b/lib/utils/hlo_utils.cc
index 8ff1ce3..0bbd91e 100644
--- a/lib/utils/hlo_utils.cc
+++ b/lib/utils/hlo_utils.cc
@@ -132,13 +132,5 @@ DenseElementsAttr GetScalarLimitOfType(Type ty, ScalarLimit limit) {
   llvm_unreachable("unsupported type");
 }
 
-std::string LmhloToMhloOpName(llvm::StringRef op_name,
-                              mlir::MLIRContext *context) {
-  assert(op_name.startswith("lmhlo.") && "Expected an LMHLO op");
-  std::string mhlo_op_name(op_name.drop_front(1));
-  if (context->isOperationRegistered(mhlo_op_name)) return mhlo_op_name;
-  return "";
-}
-
 }  // namespace hlo
 }  // namespace mlir