Remove dead code and stale docs in compiler/ext, common, depends and ml - #8699

Remove dead code and stale docs in compiler/ext, common, depends and ml#8699

cristianoc wants to merge 32 commits into

masterrescript-lang/rescript:masterfrom

cristianoc/cleanup-compiler-ext-common-mlrescript-lang/rescript:cristianoc/cleanup-compiler-ext-common-mlCopy head branch name to clipboard