middle: trans: base: remove dead code
middle: trans: build: remove dead code
middle: trans: builder: ignore dead code
middle: trans: cabi: remove dead code
middle: trans: callee: remove dead code
middle: trans: common: remove dead code
middle: trans: context: remove dead code
middle: trans: datum: remove dead code
middle: trans: meth: remove dead code
middle: trans: reflect: remove dead code
middle: trans: tvec: remove dead code
middle: trans: type_: remove dead code
middle: ty: remove dead code
middle: typeck: check: remove dead code
middle: typeck: infer: combine: remove dead code
middle: typeck: infer: lub: remove dead code
middle: typeck: infer: remove dead code
middle: typeck: infer: resolve: remove dead code
middle: typeck: remove dead code
middle: typeck: rscope: remove dead code