issue #331 - Remove localStorage to FileSystem migration code

background.js

Index: background.js
===================================================================
--- a/background.js
+++ b/background.js
@@ -59,8 +59,6 @@
 {
   if (action == "load")
   {
-    var importingOldData = importOldData();
-
     var addonVersion = require("info").addonVersion;
     var prevVersion = ext.storage.currentVersion;
 
@@ -75,8 +73,7 @@
     {
       seenDataCorruption = prevVersion && FilterStorage.firstRun;
       ext.storage.currentVersion = addonVersion;
-      if (!importingOldData)
-        addSubscription(prevVersion);
+      addSubscription(prevVersion);
     }
 
     if (canUseChromeNotifications)
@@ -153,30 +150,6 @@
 }
 
 /**
- * Old versions for Opera stored patterns.ini in the localStorage object, this
- * will import it into FilterStorage properly.
- * @return {Boolean} true if data import is in progress
- */
-function importOldData()
-{
-  if ("patterns.ini" in localStorage)
-  {
-    FilterStorage.loadFromDisk(localStorage["patterns.ini"]);
-
-    var remove = [];
-    for (var key in localStorage)
-      if (key.indexOf("patterns.ini") == 0 || key.indexOf("patterns-backup") == 0)
-        remove.push(key);
-    for (var i = 0; i < remove.length; i++)
-      delete localStorage[remove[i]];
-
-    return true;
-  }
-  else
-    return false;
-}
-
-/**
  * This function is called on an extension update. It will add the default
  * filter subscription if necessary.
  */