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>