[gnome-calendar] meson.build: fix meson 0.61 builds

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit e35dbc1acd03dd1751b755b6c8e1932a692ad4e1
Author: Alexander Kanavin <alex linutronix de>
Date:   Fri Jan 21 21:18:39 2022 +0100

    meson.build: fix meson 0.61 builds
    
    Signed-off-by: Alexander Kanavin <alex linutronix de>

 data/appdata/meson.build | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/data/appdata/meson.build b/data/appdata/meson.build
index b5ee6540..200c3507 100644
--- a/data/appdata/meson.build
+++ b/data/appdata/meson.build
@@ -1,7 +1,6 @@
 appdata_conf = configuration_data()
 appdata_conf.set('appid', application_id)
 appdata = i18n.merge_file(
-  'appdata',
   input: configure_file(
     input: files('org.gnome.Calendar.appdata.xml.in.in'),
     output: 'org.gnome.Calendar.appdata.xml.in',