1 files changed, 0 insertions, 29 deletions
diff --git a/toolkit/modules/sessionstore/Utils.sys.mjs b/toolkit/modules/sessionstore/Utils.sys.mjs
deleted file mode 100644
index 627cd22686..0000000000
--- a/toolkit/modules/sessionstore/Utils.sys.mjs
+++ /dev/null
@@ -1,29 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-export var Utils = Object.freeze({
-  /**
-   * Restores frame tree |data|, starting at the given root |frame|. As the
-   * function recurses into descendant frames it will call cb(frame, data) for
-   * each frame it encounters, starting with the given root.
-   */
-  restoreFrameTreeData(frame, data, cb) {
-    // Restore data for the root frame.
-    // The callback can abort by returning false.
-    if (cb(frame, data) === false) {
-      return;
-    }
-
-    if (!data.hasOwnProperty("children")) {
-      return;
-    }
-
-    // Recurse into child frames.
-    SessionStoreUtils.forEachNonDynamicChildFrame(frame, (subframe, index) => {
-      if (data.children[index]) {
-        this.restoreFrameTreeData(subframe, data.children[index], cb);
-      }
-    });
-  },
-});