Remove redundant method, is in superclass of alias

Author: cstamas

src/main/java/org/codehaus/plexus/archiver/tar/PlexusIoTGZFileResourceCollection.java

@@ -11,11 +11,4 @@
 public class PlexusIoTGZFileResourceCollection
     extends PlexusIoTarGZipFileResourceCollection
 {
-
-    @Override
-    protected TarFile newTarFile( File file )
-    {
-        return new GZipTarFile( file );
-    }
-
 }