[gnome-builder] buffer: remove outdated comment

[Christian Hergert <chergert src gnome org>]

commit 0f5ab4a857fe95d616dac6561642cf1b2172a8a3
Author: Christian Hergert <chergert redhat com>
Date:   Sat Aug 5 15:33:13 2017 -0700

    buffer: remove outdated comment

 libide/buffers/ide-buffer.c |    5 -----
 1 files changed, 0 insertions(+), 5 deletions(-)
---
diff --git a/libide/buffers/ide-buffer.c b/libide/buffers/ide-buffer.c
index 6769bf4..080140a 100644
--- a/libide/buffers/ide-buffer.c
+++ b/libide/buffers/ide-buffer.c
@@ -875,11 +875,6 @@ ide_buffer__file_notify_language (IdeBuffer  *self,
   g_assert (IDE_IS_BUFFER (self));
   g_assert (IDE_IS_FILE (file));
 
-  /*
-   * FIXME: Workaround for 3.16.3
-   *        This should be refactored as part of the move to libpeas.
-   */
-
   language = ide_file_get_language (file);
   gtk_source_buffer_set_language (GTK_SOURCE_BUFFER (self), language);