[clang-linker-wrapper] Remove unused local variables (NFC) (#138480)

Author: kazutakahirata

clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp

@@ -418,9 +418,6 @@ fatbinary(ArrayRef<std::pair<StringRef, StringRef>> InputFiles,
   if (!OffloadBundlerPath)
     return OffloadBundlerPath.takeError();
 
-  llvm::Triple Triple(
-      Args.getLastArgValue(OPT_host_triple_EQ, sys::getDefaultTargetTriple()));
-
   // Create a new file to write the linked device image to.
   auto TempFileOrErr =
       createOutputFile(sys::path::filename(ExecutableName), "hipfb");
@@ -758,7 +755,6 @@ bundleCuda(ArrayRef<OffloadingImage> Images, const ArgList &Args) {
     InputFiles.emplace_back(std::make_pair(Image.Image->getBufferIdentifier(),
                                            Image.StringData.lookup("arch")));
 
-  Triple TheTriple = Triple(Images.front().StringData.lookup("triple"));
   auto FileOrErr = nvptx::fatbinary(InputFiles, Args);
   if (!FileOrErr)
     return FileOrErr.takeError();
@@ -781,7 +777,6 @@ bundleHIP(ArrayRef<OffloadingImage> Images, const ArgList &Args) {
     InputFiles.emplace_back(std::make_pair(Image.Image->getBufferIdentifier(),
                                            Image.StringData.lookup("arch")));
 
-  Triple TheTriple = Triple(Images.front().StringData.lookup("triple"));
   auto FileOrErr = amdgcn::fatbinary(InputFiles, Args);
   if (!FileOrErr)
     return FileOrErr.takeError();