Remove `LocalInternedString` uses from `librustc_codegen_llvm/consts.rs`.
Remove `LocalInternedString` uses from `librustc_codegen_llvm/consts.rs`.

aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust