Cleanups

data/gtk/details-window.blp

@@ -116,6 +116,7 @@ template $DetailsWindow : Adw.Window {
                     tooltip-text: _("More Info");
 
                     popover: Popover exec_info_popover {
+                        focusable: true;
 
                         Label exec_info_label {
                             use-markup: true;

src/details_window.py

@@ -48,7 +48,6 @@ class DetailsWindow(Adw.Window):
     developer = Gtk.Template.Child()
     executable = Gtk.Template.Child()
 
-    exec_info_button = Gtk.Template.Child()
     exec_info_label = Gtk.Template.Child()
     exec_info_popover = Gtk.Template.Child()
 
@@ -115,7 +114,6 @@ class DetailsWindow(Adw.Window):
 
         self.exec_info_label.set_label(exec_info_text)
 
-        self.exec_info_popover.set_focusable(True)
         self.exec_info_popover.update_property(
             (Gtk.AccessibleProperty.LABEL,),
             (