There appear to be several unused duplicates of copper golem subtitle strings

Separate subtitle strings for weathered and oxidized copper golems performing the spin action, taking damage, and dying seem to exist in en_us.json. Their content is no different to the non-oxidized versions. However, sounds.json appears to completely skip these, instead simply pointing to the generics.

Since these are unused and no different from the standard, used versions, it may be worth simply removing them.