[gnome-continuous] Update config-opts for devhelp

[Emmanuele Bassi <ebassi src gnome org>]

commit 359ea0b2da1831b15e7181d04363422df8bdb3a6
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Mar 12 10:31:44 2018 +0000

    Update config-opts for devhelp
    
    Upstream moved to Meson, we don't need `--disable-Werror` any more.

 manifest.json |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 819270f..ba35130 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1290,8 +1290,7 @@
                 "config-opts": ["-Dgtk_doc=false",
                                  "-Dinstalled_tests=true"]},
 
-               {"src": "gnome:devhelp",
-                 "config-opts": ["--disable-Werror"]},
+               {"src": "gnome:devhelp"},
 
                {"src": "gnome:gnome-screenshot"},