require errormsg to be specified before file.

tests/generics/texplicitgeneric1.nim

@@ -1,5 +1,4 @@
 discard """
-  file: "texplicitgeneric1.nim"
   output: "Key: 12 value: 12Key: 13 value: 13 Key: A value: 12 Key: B value: 13"
 """
 # test explicit type instantiation
@@ -33,6 +32,3 @@ c.add('A', "12")
 c.add('B', "13")
 for k, v in items(c):
   stdout.write(" Key: ", $k, " value: ", v)
-
-
-