bazel: Remove BoringSSL repository (#2035)
bazel: Remove BoringSSL repository (#2035)

Pull request #2002 removed signature calculation which was using
BoringSSL as a dependency. BoringSSL is not needed anymore.

Signed-off-by: Michal Rostecki <82ebf970c69340aebb770c3853be5fd96a3eb584@suse.de>
istio/proxy,lizan/proxy,lizan/proxy,istio/proxy,lizan/proxy,istio/proxy,istio/proxy,lizan/proxy