[gtksourceview] Remove outdated FIXME in undomanager unit tests

[Paolo Borelli <pborelli src gnome org>]

commit 1386056aa2297acb0ff14b86cf3f988c5208cb9e
Author: Paolo Borelli <pborelli gnome org>
Date:   Mon Apr 14 21:48:32 2014 +0200

    Remove outdated FIXME in undomanager unit tests
    
    We had a workaround for an unexpected behaviour that is now fixed

 tests/test-undo-manager.c |    5 -----
 1 files changed, 0 insertions(+), 5 deletions(-)
---
diff --git a/tests/test-undo-manager.c b/tests/test-undo-manager.c
index aa04050..5660ede 100644
--- a/tests/test-undo-manager.c
+++ b/tests/test-undo-manager.c
@@ -454,11 +454,6 @@ test_merge_actions (void)
 
        /* Delete the two words (with backspace) */
        delete_char_at_offset (buffer, 3);
-
-       /* FIXME when testing with gedit, the deletions of 'i' followed by ' ' are
-        * merged. Here they are not merged... */
-       contents_history = g_list_append (contents_history, get_contents (buffer));
-
        delete_char_at_offset (buffer, 2);
        contents_history = g_list_append (contents_history, get_contents (buffer));