[gnome-online-accounts] build: Remove unused macro

[Debarshi Ray <debarshir src gnome org>]

commit e9b50939f67bc436befd644962a63703198e80d5
Author: Debarshi Ray <rishi fedoraproject org>
Date:   Mon Oct 1 15:06:02 2018 +0200

    build: Remove unused macro
    
    Fallout from d46cd37f1fcd26c70fcb9cb399e2872c79b55e23

 meson.build | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 62e1db18..6a706a76 100644
--- a/meson.build
+++ b/meson.build
@@ -63,7 +63,6 @@ config_h.set('GOA_MICRO_VERSION', goa_micro_version)
 
 # compiler flags
 common_flags = [
-  '-DHAVE_CONFIG_H',
   '-D_POSIX_PTHREAD_SEMANTICS',
   '-D_REENTRANT'
 ]