[gnome-build-meta] sdk/gst-plugins-bad.bst: drop downstream patch

[Jordan Petridis <jpetridis src gnome org>]

commit de9fe323b2ecaaa1b9e0acf3a334c10c395cfb0f
Author: Jordan Petridis <jpetridis gnome org>
Date:   Wed Nov 7 00:41:32 2018 +0200

    sdk/gst-plugins-bad.bst: drop downstream patch
    
    This is now merged upstream.
    
    https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/merge_requests/21

 elements/sdk/gst-plugins-bad.bst                   |  2 --
 ...-avoid-unkown-variables-in-the-msdk-tests.patch | 36 ----------------------
 2 files changed, 38 deletions(-)
---
diff --git a/elements/sdk/gst-plugins-bad.bst b/elements/sdk/gst-plugins-bad.bst
index d245f44..a629c06 100644
--- a/elements/sdk/gst-plugins-bad.bst
+++ b/elements/sdk/gst-plugins-bad.bst
@@ -3,8 +3,6 @@ sources:
 - kind: git
   url: git_freedesktop_org:gstreamer/gst-plugins-bad
   track: master
-- kind: patch
-  path: files/gst-plugins-bad/0001-meson-avoid-unkown-variables-in-the-msdk-tests.patch
 depends:
 - sdk/gst-plugins-base.bst
 - sdk/librsvg.bst