Fixes hi test

Author: szymon-rd

tests/neg-custom-args/sourcepath2/hi/A.check

@@ -1,7 +1,6 @@
--- Warning: tests/neg-custom-args/sourcepath2/hi/A.scala:3:6 -----------------------------------------------------------
-3 |class Hello { // warn
+-- Error: tests/neg-custom-args/sourcepath2/hi/A.scala:3:6 -------------------------------------------------------------
+3 |class Hello { // error
   |      ^
   |      class Hello is in the wrong directory.
   |      It was declared to be in package <empty>
   |      But it is found in directory     hi
-No warnings can be incurred under -Werror.

tests/neg-custom-args/sourcepath2/hi/A.scala

@@ -1,6 +1,5 @@
 // Missing `package hi`
 
-class Hello { // warn
+class Hello { // error
   val x: Int = 1
 }
-// nopos-error: werror