Extensions0.hs.refact

[("tests/examples/Extensions0.hs:1:1: Error: Unused LANGUAGE pragma\nFound:\n  {-# LANGUAGE Arrows #-}\nWhy not remove it.\n",[ModifyComment {pos = SrcSpan {startLine = 1, startCol = 1, endLine = 1, endCol = 24}, newComment = ""}])]