[sysprof] build: drop glib requirement

[Christian Hergert <chergert src gnome org>]

commit af2251b48db71e25e50259c781574bfe4aebbe47
Author: Christian Hergert <chergert redhat com>
Date:   Thu Oct 31 11:07:51 2019 -0700

    build: drop glib requirement
    
    This isn't needed to maintain compatibility.
    
    https://gitlab.gnome.org/GNOME/sysprof/commit/b624ec8809afa52f03dd2feeaa6bc883f53c52bd#note_636631

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index a49ac74..a018c34 100644
--- a/meson.build
+++ b/meson.build
@@ -17,7 +17,7 @@ version_split = meson.project_version().split('.')
 datadir = get_option('datadir')
 podir = join_paths(meson.source_root(), 'po')
 
-glib_req_version = '>= 2.63.0'
+glib_req_version = '>= 2.61.3'
 gtk_req_version = '>= 3.22'
 polkit_req_version = '>= 0.105'
 dazzle_req_version = '>= 3.30.0'