Bug#951877: OpenSSL linking without license exception

[Bastian Germann]

Package: restbed
Severity: serious

This package links to OpenSSL even though it does not have any license
exception for it. ftp-master considers this a serious issue. I can build
fine without libssl, so please remove this dependency. If you want to
keep it maybe you want to try building with wolfssl which has an OpenSSL
compatibility library.