tools: remove unused using declarations code_cache

This commit removes the reported unused using declarations from
cache_builder.cc

PR-URL: https://github.com/nodejs/node/pull/33697
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

tools/code_cache/cache_builder.cc

@@ -13,10 +13,7 @@ namespace node {
 namespace native_module {
 
 using v8::Context;
-using v8::Function;
-using v8::Isolate;
 using v8::Local;
-using v8::MaybeLocal;
 using v8::ScriptCompiler;
 
 static std::string GetDefName(const std::string& id) {