Remove OSv repository from the pom.xml

The crash CLI is no longer the default cli. It can stil be compiled but
there's no need to hold the binaries on ourown repository.

Removing OSv binary repository from the pom will allow to terminate that
service.

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@iki.fi>