[gnome-screenshot] application: Drop support for non-unique mode in headless instance

[Alexander Mikhaylenko <alexm src gnome org>]

commit 97316afbd1e9b0c25de5f87b52d47448ee667bdb
Author: Sebastian Keller <skeller gnome org>
Date:   Fri Nov 12 22:21:27 2021 +0100

    application: Drop support for non-unique mode in headless instance
    
    gnome-shell started allowing only applications that own certain names
    on the session bus to interact with the screenshot interface. While the
    name used by gnome-screenshot is on the allowed list, non-unique
    instances that are used for the headless mode do not own that name. Fix
    this by also making the headless instance unique so it will own the
    name. This however also means that there can only ever be a single
    instance of gnome-screenshot, regardless of headless or interactive.
    
    Fixes: https://gitlab.gnome.org/GNOME/gnome-screenshot/-/issues/179

 src/screenshot-application.c | 12 ------------
 1 file changed, 12 deletions(-)
---
diff --git a/src/screenshot-application.c b/src/screenshot-application.c
index cc663d4..7acdc0e 100644
--- a/src/screenshot-application.c
+++ b/src/screenshot-application.c
@@ -630,18 +630,6 @@ screenshot_application_handle_local_options (GApplication *app,
       exit (EXIT_SUCCESS);
     }
 
-  /* Start headless instances in non-unique mode */
-  if (!g_variant_dict_contains (options, "interactive"))
-    {
-      GApplicationFlags old_flags;
-
-      old_flags = g_application_get_flags (app);
-      if ((old_flags & G_APPLICATION_IS_SERVICE) == 0)
-        {
-          g_application_set_flags (app, old_flags | G_APPLICATION_NON_UNIQUE);
-        }
-    }
-
   return -1;
 }