Deletes incorrect sentence
Deletes incorrect sentence

In numeric contexts, it will still return a Duration. If you do any
operation with other kind of numbers, the result will be that number's
type, but that's the operation, not just the context. Closes #1589

stmuk/doc,jonathanstowe/doc,MasterDuke17/doc,MasterDuke17/doc,tbrowder/doc,perl6/doc,tbrowder/doc,jonathanstowe/doc,tbrowder/doc,stmuk/doc,jonathanstowe/doc,perl6/doc,perl6/doc,stmuk/doc,MasterDuke17/doc,stmuk/doc,perl6/doc,perl6/doc,MasterDuke17/doc,stmuk/doc,jonathanstowe/doc,jonathanstowe/doc,tbrowder/doc