[gnome-builder] build: remove nonexistant directory

[Christian Hergert <chergert src gnome org>]

commit a1729b59bf2e4c8ebfb80333e47e193c4f816ccb
Author: Christian Hergert <christian hergert me>
Date:   Sat Dec 20 21:22:16 2014 -0800

    build: remove nonexistant directory

 src/gnome-builder.mk |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/gnome-builder.mk b/src/gnome-builder.mk
index af3f146..e870816 100644
--- a/src/gnome-builder.mk
+++ b/src/gnome-builder.mk
@@ -254,7 +254,6 @@ libgnome_builder_la_CFLAGS = \
        -I$(top_srcdir)/src/scrolledwindow \
        -I$(top_srcdir)/src/search \
        -I$(top_srcdir)/src/snippets \
-       -I$(top_srcdir)/src/tabs \
        -I$(top_srcdir)/src/tree \
        -I$(top_srcdir)/src/trie \
        -I$(top_srcdir)/src/theatrics \