Delete a non-existent methods documentation due to https://github.com/perl6/doc/issues/777
Delete a non-existent methods documentation due to https://github.com/perl6/doc/issues/777

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