remove unused function

Author: pranavm-nvidia

mlir-tensorrt/python/bindings/Compiler/CompilerPyBind.cpp

@@ -19,6 +19,7 @@
 #include "mlir/Bindings/Python/PybindAdaptors.h"
 #include "pybind11/pybind11.h"
 #include "llvm/Support/DynamicLibrary.h"
+#include <iostream>
 #include <pybind11/attr.h>
 #include <pybind11/functional.h>
 
@@ -68,6 +69,7 @@ class PyStableHLOToExecutableOptions
           mtrtPythonCapsuleToStableHLOToExecutableOptions,
           mtrtPythonStableHLOToExecutableOptionsToCapsule};
 
+  // We need this member so we can keep the Python callback alive long enough.
   std::function<std::string(MlirOperation)> callback;
 };
 } // namespace
@@ -226,25 +228,6 @@ static void bindTensorRTPluginAdaptorObjects(py::module m) {
 #endif
 #endif
 
-void layerMetadataCallback(MlirOperation op, MlirStringCallback append,
-                           void *appendCtx, void *userDataVoid) {
-  // auto pyCallback =
-  //     *static_cast<std::function<std::string(MlirOperation)>
-  //     *>(userDataVoid);
-
-  // std::string result;
-  // try {
-  //   result = pyCallback(op);
-  // } catch (const std::exception &e) {
-  //   // TODO: What to do here? Change callback to return a status
-  //   // instead of void?
-  //   // return mtrtStatusCreate(
-  //   //     MTRT_StatusCode::MTRT_StatusCode_Unknown, e.what());
-  // }
-
-  // append(MlirStringRef{result.data(), result.size()}, appendCtx);
-}
-
 PYBIND11_MODULE(_api, m) {
 
   populateCommonBindingsInModule(m);
@@ -312,10 +295,7 @@ PYBIND11_MODULE(_api, m) {
               try {
                 result = pyCallback(op);
               } catch (const std::exception &e) {
-                // TODO: What to do here? Change callback to return a status
-                // instead of void?
-                // return mtrtStatusCreate(
-                //     MTRT_StatusCode::MTRT_StatusCode_Unknown, e.what());
+                std::cerr << e.what() << std::endl;
               }
 
               append(MlirStringRef{result.data(), result.size()}, appendCtx);