[gnome-usage] app-item: Drop an unused variable

[Adrien Plazas <aplazas src gnome org>]

commit 1c4b42fe4a5498ea206e52cf11aa18c0e8ca1299
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Dec 3 12:29:02 2021 +0100

    app-item: Drop an unused variable

 src/app-item.vala | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/src/app-item.vala b/src/app-item.vala
index f8a420c..53296e4 100644
--- a/src/app-item.vala
+++ b/src/app-item.vala
@@ -103,7 +103,6 @@ namespace Usage {
         public static AppInfo? app_info_for_process (Process p) {
             AppInfo? info = null;
             string ?cgroup = null;
-            Pid pid = p.pid;
 
             cgroup = Process.read_cgroup(p.pid);
             if (cgroup != null) {