code: public static InMemoryJarfile getCatalogJarWithoutDefaultArtifacts(final InMemoryJarfile jarfile) {
          InMemoryJarfile cloneJar = jarfile.deepCopy();
          for (String entry : CATALOG_DEFAULT_ARTIFACTS) {
              cloneJar.remove(entry);
          }
          return cloneJar;
      }
docs: Removes the default voltdb artifact files from catalog and returns the resulltant
  jar file. This will contain dependency files needed for generated stored procs
  
  @param jarfile in-memory catalog jar file
  @return In-memory jar file containing dependency files for stored procedures