shortcuts-inhibitor: move to new impl

src/helpers/WLClasses.hpp

@@ -316,13 +316,3 @@ struct SSwitchDevice {
         return pWlrDevice == other.pWlrDevice;
     }
 };
-
-struct SShortcutInhibitor {
-    wlr_keyboard_shortcuts_inhibitor_v1* pWlrInhibitor = nullptr;
-
-    DYNLISTENER(destroy);
-
-    bool operator==(const SShortcutInhibitor& other) const {
-        return pWlrInhibitor == other.pWlrInhibitor;
-    }
-};