Remove unused function writeFile from init.go
Remove unused function writeFile from init.go

Commit 0acfd38c2254a8d54cbc8cbef965469471cb8f42 changed how the code was
organized. This function was moved to fs.go, however the unused copy in
init.go seems to have been left behind by accident.

golang/dep,golang/dep,ibrasho-forks/dep,golang/dep,EwanValentine/dep,ibrasho-forks/dep,EwanValentine/dep