[gnome-continuous] Drop Mesa patch for llvm-config

[Emmanuele Bassi <ebassi src gnome org>]

commit 4cef1c6db62faead183f0d10d4a5fd213f248bcd
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Sep 3 00:01:43 2019 +0100

    Drop Mesa patch for llvm-config

 manifest.json | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 1f0193e..5e2ca23 100644
--- a/manifest.json
+++ b/manifest.json
@@ -324,9 +324,7 @@
                      "x86_64": "-g -m64 -mtune=generic",
                      "i686": "-g -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables"
                  },
-                 "patches": ["mesa-nv50-fix-build.patch",
-                            "mesa-llvm-config-dir.patch"],
-                 "force-autotools": true,
+                 "patches": ["mesa-nv50-fix-build.patch"],
                  "config-opts": [
                      "--host=x86_64-gnomeostree-linux",
                      "--disable-asm",