message: [MLIR][KernelGen] Remove unused `<` operator definition
diff: @@ -33,13 +33,6 @@ limitations under the License.
  #include "tensorflow/compiler/mlir/tools/kernel_gen/transforms/passes.h"
  #include "tensorflow/compiler/mlir/tools/kernel_gen/transforms/rewriters.h"
  -// Needed to build `llvm::EquivalenceClasses` of `mlir::Value`s.
  -namespace mlir {
  -static bool operator<(const Value &lhs, const Value &rhs) {
  - return lhs.getAsOpaquePointer() < rhs.getAsOpaquePointer();
  -}
  -} // namespace mlir
  -
  constexpr llvm::StringRef
  mlir::kernel_gen::tf_framework::TFAllocOp::kReuseOutputAttrName;
  constexpr llvm::StringRef
  