Remove unused variables in manifold/service/TxThrottlingWrappers.cpp

Summary:
LLVM-15 has a warning `-Wunused-but-set-variable` which we treat as an error because it's so often diagnostic of a code issue. Unused variables can compromise readability or, worse, performance.

This diff either (a) removes an unused variable and, possibly, it's associated code, or (b) qualifies the variable with `[[maybe_unused]]`, mostly in cases where the variable _is_ used, but, eg, in an `assert` statement that isn't present in production code.

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Reviewed By: palmje

Differential Revision: D54931237

fbshipit-source-id: e8ed38f4359537a4a3e4e97afaf1a41c49d2b413

multipy/runtime/deploy.cpp

@@ -44,10 +44,12 @@ const std::initializer_list<InterpreterSymbol> pythonInterpreterSymbols = {
      "_binary_libtorch_deployinterpreter_hip_so_end",
      false},
 };
+#ifndef FBCODE_CAFFE2
 const std::initializer_list<ExeSection> multipyTorchSections = {
     {".torch_deploy_payload.multipy_torch", false},
 };
 const std::initializer_list<InterpreterSymbol> multipyTorchSymbols = {};
+#endif
 
 InterpreterManager::InterpreterManager(
     size_t nInterp,