Apply suggestions from code review

Author: josevalim

lib/mix/lib/mix/tasks/format.ex

@@ -807,18 +807,12 @@ defmodule Mix.Tasks.Format do
     :ok
   end
 
-  defp check!(
-         {[{:exit, :stdin, exception, stacktrace} | _], _not_formatted},
-         _task_opts
-       ) do
+  defp check!({[{:exit, :stdin, exception, stacktrace} | _], _not_formatted}, _task_opts) do
     Mix.shell().error("mix format failed for stdin")
     reraise exception, stacktrace
   end
 
-  defp check!(
-         {[{:exit, file, exception, stacktrace} | _], _not_formatted},
-         _task_opts
-       ) do
+  defp check!({[{:exit, file, exception, stacktrace} | _], _not_formatted}, _task_opts) do
     Mix.shell().error("mix format failed for file: #{Path.relative_to_cwd(file)}")
     reraise exception, stacktrace
   end