astRemoveTablesastRemoveTables - Remove one or more tables from a FitsChan

Description:
This function removes the named tables from the FitsChanFitsChan, it they exist (no error is reported if any the tables do not exist).
Synopsis:
void astRemoveTables( AstFitsChan $*$this, const char $*$key )
Parameters:
this
Pointer to the FitsChan.
key
The key indicating which tables to exist. A single key or a comma-separated list of keys can be supplied. If a blank string is supplied, all tables are removed.