Removing support for adding legacy shortcuts.

All existing legacy shortcuts will be migrated one-time to deep shortcuts
This shortcuts are pinned under the Launcher package, with custom badging

Bug: 275875209
Test: Updated unit tests
Flag: N/A
Change-Id: I7da001f724776ad8d6c807517b7e4e259de626c2

src/com/android/launcher3/model/DatabaseHelper.java

@@ -72,7 +72,7 @@ public class DatabaseHelper extends NoLocaleSQLiteHelper implements
      * Represents the schema of the database. Changes in scheme need not be backwards compatible.
      * When increasing the scheme version, ensure that downgrade_schema.json is updated
      */
-    public static final int SCHEMA_VERSION = 31;
+    public static final int SCHEMA_VERSION = 32;
     private static final String TAG = "DatabaseHelper";
     private static final boolean LOGD = false;
 
@@ -327,6 +327,10 @@ public class DatabaseHelper extends NoLocaleSQLiteHelper implements
                 return;
             }
             case 31: {
+                LauncherDbUtils.migrateLegacyShortcuts(mContext, db);
+            }
+            // Fall through
+            case 32: {
                 // DB Upgraded successfully
                 return;
             }