Remove restricted syntax.
Remove restricted syntax.

Signed-off-by: Etienne M. Gagnon <bf06ec0eb40152cd863534753d026b021022c851@j-meg.com>

Herve-M/sablecc,SableCC/sablecc,SableCC/sablecc,Herve-M/sablecc,Herve-M/sablecc,Herve-M/sablecc,Herve-M/sablecc,SableCC/sablecc,SableCC/sablecc,SableCC/sablecc