Remove mina_sshd, jgit, gwtorm, gwtjsonrpc from build

These should be installed into the user's Maven repository, or
obtained from their upstream repositories using a stable release
name.  Right now mina_sshd and jgit aren't available as stable
releases, but these can still be fairly easily built by anyone
developing for Gerrit2.

Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed