Adding NPE check in InstallShortcutReceiver

> Removing some unused methods

Bug: 17971165
Change-Id: I1bc5c764fd65b44c950a58371b60d2b53c221995
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index ec1c0aa..dfbef31 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -1434,7 +1434,7 @@
 
         boolean foundCellSpan = false;
 
-        ShortcutInfo info = mModel.infoFromShortcutIntent(this, data, null);
+        ShortcutInfo info = mModel.infoFromShortcutIntent(this, data);
         if (info == null) {
             return;
         }