remove deprecation notice for PIR assignment syntax
remove deprecation notice for PIR assignment syntax

we're not going to fix this mistake. see TT #906 for why.

gagern/parrot,fernandobrito/parrot,gagern/parrot,tkob/parrot,youprofit/parrot,fernandobrito/parrot,fernandobrito/parrot,gitster/parrot,FROGGS/parrot,gagern/parrot,FROGGS/parrot,tkob/parrot,tkob/parrot,youprofit/parrot,gagern/parrot,FROGGS/parrot,tewk/parrot-select,FROGGS/parrot,fernandobrito/parrot,tewk/parrot-select,fernandobrito/parrot,FROGGS/parrot,tkob/parrot,gagern/parrot,parrot/parrot,tewk/parrot-select,gitster/parrot,FROGGS/parrot,youprofit/parrot,gagern/parrot,gitster/parrot,FROGGS/parrot,gitster/parrot,tewk/parrot-select,gitster/parrot,fernandobrito/parrot,youprofit/parrot,tkob/parrot,gitster/parrot,youprofit/parrot,youprofit/parrot,gagern/parrot,fernandobrito/parrot,gitster/parrot,tewk/parrot-select,parrot/parrot,tewk/parrot-select,parrot/parrot,parrot/parrot,tkob/parrot,FROGGS/parrot,tkob/parrot,tewk/parrot-select,parrot/parrot,youprofit/parrot,youprofit/parrot,tkob/parrot