[jsonrpc-glib] build: this doesn't seen to be needed

[Christian Hergert <chergert src gnome org>]

commit b1ee11fcaec4fc32262265fd918d679acd7b7348
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 4 02:21:59 2018 -0800

    build: this doesn't seen to be needed

 meson.build | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index c44d6cf..db8771a 100644
--- a/meson.build
+++ b/meson.build
@@ -38,7 +38,6 @@ configure_file(
 add_project_arguments([
   '-DHAVE_CONFIG_H',
   '-I' + meson.build_root(),
-  '-I' + join_paths(meson.source_root(), 'src'),
   '-DJSONRPC_GLIB_COMPILATION',
 ], language: 'c')