[gnome-boxes] Drop libgd

[Felipe Borges <felipeborges src gnome org>]

commit 0d2e60bd28bd2ff85102b4bc55cef39ed4d2f97e
Author: Felipe Borges <felipeborges gnome org>
Date:   Thu Jan 4 14:45:59 2018 +0100

    Drop libgd
    
    Many libgd utilities have been replaced with their Gtk+ counterparts.
    Most of these are libgd widgets which matured into Gtk+ widgets.
    
    The Notification and AuthNotification widgets have been ported to
    GtkRevealer. See commits 2c85bc0 and 6a83809.
    
    The IconView has been ported to GtkFlowBox.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=792204

 .gitmodules       |    3 ---
 meson.build       |   12 ------------
 src/meson.build   |    3 ---
 subprojects/libgd |    1 -
 4 files changed, 0 insertions(+), 19 deletions(-)
---
diff --git a/.gitmodules b/.gitmodules
index e91a9d2..e69de29 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "subprojects/libgd"]
-       path = subprojects/libgd
-       url = git://git.gnome.org/libgd
diff --git a/meson.build b/meson.build
index 30ccac8..67eb5b8 100644
--- a/meson.build
+++ b/meson.build
@@ -20,18 +20,6 @@ vapi_dir = join_paths (meson.source_root (), 'vapi')
 config_dep = valac.find_library ('config', dirs: src_dir)
 
 pkglibdir = join_paths (get_option ('libdir'), meson.project_name ())
-libgd = subproject (
-  'libgd',
-  default_options: [
-    'pkglibdir=' + pkglibdir,
-    'with-gtk-hacks=true',
-    'with-main-view=true',
-    'with-vapi=true',
-  ],
-)
-
-libgd_vapi_dep = libgd.get_variable ('libgd_vapi_dep')
-libgd_dep = libgd.get_variable('libgd_dep')
 
 msgfmt = find_program ('msgfmt')
 
diff --git a/src/meson.build b/src/meson.build
index 8940b05..2555f66 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -9,7 +9,6 @@ vala_args = [
   '--enable-experimental',
   '--vapidir', vapi_dir,
   '--vapidir', join_paths (vapi_dir, 'upstream'),
-  '--vapidir', join_paths (meson.build_root (), 'subprojects', 'libgd', 'libgd')
 ]
 
 common_dependencies = [
@@ -129,8 +128,6 @@ boxes_sources = [
 dependencies = [
   config_dep,
   libarchive_dep,
-  libgd_dep,
-  libgd_vapi_dep,
   dependency ('gobject-2.0', version: '>= 2.44'),
   dependency ('gtk+-3.0', version: '>= 3.19.8'),
   dependency ('gtk-vnc-2.0', version: '>= 0.4.4'),