FIX: temporarily disable one kind of table detection

A recent major update in the haproxy 1.5 documentation [1] breaks the
converter. As a quick fix, let's disable one table detection in the parser.
In fact, the parser code was ugly, it's maybe time to seriously address this.

As an immediate effect, some tables will be displayed in pure ascii.

[1] http://haproxy.1wt.eu/git?p=haproxy.git;a=commit;h=74ca5041bf46a6f12638267aae053ec00c08f1bc