Don't destroy the OptParser.

As long as we're not gratuitously breaking compatibility, this
cleanup isn't available in 2.3 and it's not like ophis runs long
enough for this to be an issue anyway.

src/Ophis/CmdLine.py

@@ -72,5 +72,3 @@ def parse_args(raw_args):
     print_pass            = options.verbose > 2  # dd
     print_ir              = options.verbose > 3  # ddd
     print_labels          = options.verbose > 4  # dddd
-
-    parser.destroy()