Revert of [wasm] Identify wasm functions with index into the function tables.

src/compiler/wasm-compiler.h

Index: src/compiler/wasm-compiler.h
diff --git a/src/compiler/wasm-compiler.h b/src/compiler/wasm-compiler.h
index 706c386f5e038c30830f75f2193806c5208e1106..886b1933315b7063f1d13cab89d29cb4602005a4 100644
--- a/src/compiler/wasm-compiler.h
+++ b/src/compiler/wasm-compiler.h
@@ -68,14 +68,11 @@
 
  private:
   SourcePositionTable* BuildGraphForWasmFunction(double* decode_ms);
-  char* GetTaggedFunctionName(const wasm::WasmFunction* function);
 
   wasm::ErrorThrower* thrower_;
   Isolate* isolate_;
   wasm::ModuleBytesEnv* module_env_;
   const wasm::WasmFunction* function_;
-  // Function name is tagged with uint32 func_index - wasm#<func_index>
-  char function_name_[16];
   // The graph zone is deallocated at the end of ExecuteCompilation.
   std::unique_ptr<Zone> graph_zone_;
   JSGraph* jsgraph_;