Revert of Reuse FileTasks when entries are not changed.

ui/file_manager/file_manager/common/js/util.js

Index: ui/file_manager/file_manager/common/js/util.js
diff --git a/ui/file_manager/file_manager/common/js/util.js b/ui/file_manager/file_manager/common/js/util.js
index fe46d0d10ae0bfea81b6ece64b34ac068548e49d..f3e698d638e2eb30f5addc0efe1847ec47762fea 100644
--- a/ui/file_manager/file_manager/common/js/util.js
+++ b/ui/file_manager/file_manager/common/js/util.js
@@ -680,28 +680,6 @@
   if (!entry1 || !entry2)
     return false;
   return entry1.toURL() === entry2.toURL();
-};
-
-/**
- * Compares two entry arrays.
- * @param {Array<!Entry>} entries1 The entry array to be compared.
- * @param {Array<!Entry>} entries2 The entry array to be compared.
- * @return {boolean} True if the both arrays contain same files or directories
- *     in the same order. Returns true if both arrays are null.
- */
-util.isSameEntries = function(entries1, entries2) {
-  if (!entries1 && !entries2)
-    return true;
-  if (!entries1 || !entries2)
-    return false;
-  if (entries1.length !== entries2.length)
-    return false;
-  for (var i = 0; i < entries1.length; i++) {
-    if (!util.isSameEntry(entries1[i], entries2[i])) {
-      return false;
-    }
-  }
-  return true;
 };
 
 /**