[meld] filediff: Remove hack for pre-3.18 GTK+

[Kai Willadsen <kaiw src gnome org>]

commit 443514b59be866e2e63c3f9942cd2df4a495ea64
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Nov 19 06:53:05 2017 +1000

    filediff: Remove hack for pre-3.18 GTK+

 meld/filediff.py |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)
---
diff --git a/meld/filediff.py b/meld/filediff.py
index f0551e6..2301577 100644
--- a/meld/filediff.py
+++ b/meld/filediff.py
@@ -990,11 +990,7 @@ class FileDiff(melddoc.MeldDoc, gnomeglade.Component):
         buf.data.savefile = os.path.abspath(filename)
         buf.data.label = filename
         self.update_buffer_writable(buf)
-
-        # FIXME: Hack around bgo#737804; remove after GTK+ 3.18 is required
-        def set_merge_file_entry():
-            self.fileentry[1].set_filename(buf.data.savefile)
-        self.scheduler.add_task(set_merge_file_entry)
+        self.fileentry[1].set_filename(buf.data.savefile)
         self.recompute_label()
 
     def _set_save_action_sensitivity(self):