[io grant] Remove IO::Path.chdir prose
[io grant] Remove IO::Path.chdir prose

Will write new info after fixing up the method in Rakudo.

- &chdir is vastly different and shouldn't be listed together
- the prose is wrong, IO::Path.chdir doesn't use $*CWD
- the prose mentions now-deprecated :test param

antquinonez/doc,dmaestro/doc,tbrowder/doc,stmuk/doc,perl6/doc,perl6/doc,antquinonez/doc,MasterDuke17/doc,dmaestro/doc,gfldex/doc,tbrowder/doc,jonathanstowe/doc,gfldex/doc,jonathanstowe/doc,MasterDuke17/doc,gfldex/doc,MasterDuke17/doc,jonathanstowe/doc,perl6/doc,jonathanstowe/doc,perl6/doc,dmaestro/doc,stmuk/doc,antquinonez/doc,gfldex/doc,tbrowder/doc,dmaestro/doc,antquinonez/doc,MasterDuke17/doc,stmuk/doc,perl6/doc,tbrowder/doc,dmaestro/doc,antquinonez/doc,stmuk/doc,gfldex/doc,jonathanstowe/doc,stmuk/doc