Removed unused LibraryManagerUI.getContribModel() method

Author: cmaglie

app/src/cc/arduino/contributions/libraries/ui/LibraryManagerUI.java

@@ -71,10 +71,6 @@ protected FilteredAbstractTableModel createContribModel() {
     return new LibrariesIndexTableModel();
   }
 
-  private LibrariesIndexTableModel getContribModel() {
-    return (LibrariesIndexTableModel) contribModel;
-  }
-
   @Override
   protected TableCellRenderer createCellRenderer() {
     return new ContributedLibraryTableCellRenderer();