Remove unused 'file' function.
Remove unused 'file' function.

tshepang/cargo,tsurai/cargo,durka/cargo,achanda/cargo,achanda/cargo,achanda/cargo,eminence/cargo,nipunn1313/cargo,tshepang/cargo,vojtechkral/cargo,eminence/cargo,durka/cargo,vojtechkral/cargo,nipunn1313/cargo,tsurai/cargo,rust-lang/cargo,nipunn1313/cargo,vojtechkral/cargo,rust-lang/cargo,achanda/cargo,rustyhorde/cargo,durka/cargo,rustyhorde/cargo,vojtechkral/cargo,tsurai/cargo,eminence/cargo,rustyhorde/cargo,tsurai/cargo,tsurai/cargo,nipunn1313/cargo,rustyhorde/cargo,tshepang/cargo,durka/cargo,rust-lang/cargo,eminence/cargo,tshepang/cargo,rust-lang/cargo