renderer/gtk(gtk-extensions-directory): Extend against *libdir*.

source/renderer/gtk.lisp

@@ -309,14 +309,7 @@ the renderer thread, use `defmethod' instead."
   ((files:name "gtk-extensions")
    (files:base-path (uiop:merge-pathnames* "nyxt/" nasdf:*libdir*)))
   (:export-class-name-p t)
-  (:documentation "Directory where to load the 'libnyxt' library.
-By default it is found in the source directory."))
-
-(defmethod files:resolve ((profile nyxt-profile) (file gtk-extensions-directory))
-  (let ((system-directory (call-next-method)))
-    (if (uiop:directory-exists-p system-directory)
-        system-directory
-        (files:join (files:expand *source-directory*) "/libraries/web-extensions/"))))
+  (:documentation "Directory to load WebKitWebExtensions from. "))
 
 (define-class cookies-file (files:data-file data-manager-file)
   ((files:name "cookies"))