[four-in-a-row] Update POTFILES.skip

[Michael Catanzaro <mcatanzaro src gnome org>]

commit dffdeb3d33dabce50379bb3c0001dee7158ed114
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Sun Dec 16 14:57:08 2018 -0600

    Update POTFILES.skip

 po/POTFILES.skip | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index 9403b50..41d5ed1 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1,6 +1,5 @@
 src/four-in-a-row.c
 src/games-controls-list.c
-src/main.c
 src/prefs.c
 src/prefs-box.c
 src/scorebox.c