Merge ubuntu-app-platform:UAP_remove_mirlibs into ubuntu-app-platform:master

[Timo Jyrinki]

Exclude Mir support (LP: #1663048)

This change removes the following (on amd64):

./usr/lib/x86_64-linux-gnu/libmirclient.so
./usr/lib/x86_64-linux-gnu/libmirclient.so.9
./usr/lib/x86_64-linux-gnu/libmircommon.so
./usr/lib/x86_64-linux-gnu/libmircommon.so.7
./usr/lib/x86_64-linux-gnu/libmircookie.so
./usr/lib/x86_64-linux-gnu/libmircookie.so.2
./usr/lib/x86_64-linux-gnu/libmircore.so
./usr/lib/x86_64-linux-gnu/libmircore.so.1
./usr/lib/x86_64-linux-gnu/libmirplatform.so.14
./usr/lib/x86_64-linux-gnu/libmirprotobuf.so.3
./usr/lib/x86_64-linux-gnu/libubuntu_application_api_desktop_mirclient.so.3
./usr/lib/x86_64-linux-gnu/libubuntu_application_api_desktop_mirclient.so.3.0.0
./usr/lib/x86_64-linux-gnu/mir
./usr/lib/x86_64-linux-gnu/mir/client-platform
./usr/lib/x86_64-linux-gnu/mir/client-platform/mesa.so.5
./usr/lib/x86_64-linux-gnu/mir/server-platform
./usr/lib/x86_64-linux-gnu/mir/server-platform/graphics-mesa-kms.so.11
./usr/lib/x86_64-linux-gnu/mir/server-platform/input-evdev.so.6
./usr/lib/x86_64-linux-gnu/mir/server-platform/server-mesa-x11.so.11

diff --git a/snapcraft.yaml b/snapcraft.yaml
index c9cd641..e2bc501 100644
--- a/snapcraft.yaml
+++ b/snapcraft.yaml
@@ -83,9 +83,6 @@ parts:
         - webapp-container
         # Allow non-memory GSettings backend
         - dconf-gsettings-backend
-        # Add Mir support
-        - qtubuntu-desktop
-        - mir-graphics-drivers-desktop
         # Additional deps
         - qml-module-ubuntu-thumbnailer0.1
         # Needed by address-book-app. See bug 1643660
@@ -162,4 +159,6 @@ parts:
         - etc/xdg/maliit.org/
         - usr/lib/maliit/plugins
         - usr/share/maliit/plugins
+        # Exclude Mir
+        - -usr/lib/*/libmir*