diff --git a/test/unit/ui_utils_spec.js b/test/unit/ui_utils_spec.js
index 5eb21330c..4b7bf147d 100644
--- a/test/unit/ui_utils_spec.js
+++ b/test/unit/ui_utils_spec.js
@@ -21,7 +21,6 @@ import {
   getVisibleElements,
   isPortraitOrientation,
   isValidRotation,
-  moveToEndOfArray,
   parseQueryString,
   waitOnEventOrTimeout,
   WaitOnType,
@@ -864,44 +863,4 @@ describe("ui_utils", function () {
       });
     });
   });
-
-  describe("moveToEndOfArray", function () {
-    it("works on empty arrays", function () {
-      const data = [];
-      moveToEndOfArray(data, function () {});
-      expect(data).toEqual([]);
-    });
-
-    it("works when moving everything", function () {
-      const data = [1, 2, 3, 4, 5];
-      moveToEndOfArray(data, function () {
-        return true;
-      });
-      expect(data).toEqual([1, 2, 3, 4, 5]);
-    });
-
-    it("works when moving some things", function () {
-      const data = [1, 2, 3, 4, 5];
-      moveToEndOfArray(data, function (x) {
-        return x % 2 === 0;
-      });
-      expect(data).toEqual([1, 3, 5, 2, 4]);
-    });
-
-    it("works when moving one thing", function () {
-      const data = [1, 2, 3, 4, 5];
-      moveToEndOfArray(data, function (x) {
-        return x === 1;
-      });
-      expect(data).toEqual([2, 3, 4, 5, 1]);
-    });
-
-    it("works when moving nothing", function () {
-      const data = [1, 2, 3, 4, 5];
-      moveToEndOfArray(data, function (x) {
-        return x === 0;
-      });
-      expect(data).toEqual([1, 2, 3, 4, 5]);
-    });
-  });
 });
diff --git a/web/ui_utils.js b/web/ui_utils.js
index c769bf3f0..72ad3097b 100644
--- a/web/ui_utils.js
+++ b/web/ui_utils.js
@@ -906,27 +906,6 @@ class ProgressBar {
   }
 }
 
-/**
- * Moves all elements of an array that satisfy condition to the end of the
- * array, preserving the order of the rest.
- */
-function moveToEndOfArray(arr, condition) {
-  const moved = [],
-    len = arr.length;
-  let write = 0;
-  for (let read = 0; read < len; ++read) {
-    if (condition(arr[read])) {
-      moved.push(arr[read]);
-    } else {
-      arr[write] = arr[read];
-      ++write;
-    }
-  }
-  for (let read = 0; write < len; ++read, ++write) {
-    arr[write] = moved[read];
-  }
-}
-
 /**
  * Get the active or focused element in current DOM.
  *
@@ -1031,7 +1010,6 @@ export {
   MAX_AUTO_SCALE,
   MAX_SCALE,
   MIN_SCALE,
-  moveToEndOfArray,
   noContextMenuHandler,
   normalizeWheelEventDelta,
   normalizeWheelEventDirection,