Warner Bros. Streaming service, will all CW series be removed?

Do
1

Warner Bros. Wants to open a streaming service, that means that all CW series on Netflix and Amazon Prime will be removed so "The Flash" and "Legends of tomorrow" on "Amazon Prime" and "Arrow" and "Supergirl on" Netflix "(and supernatural)?

da

Not necessarily.

It may be that they offer their content at some point only about their own service. But until then, of course, they have to comply with their agreements and contracts with other providers.

Exact plans are unknown to me. That can probably answer you only WB itself.