[Java] Package native dependencies into jar (#4367)

java/runtime/src/main/resources/ray.default.conf

@@ -7,11 +7,6 @@ ray {
   // Basic configurations
   // ----------------------
 
-  // This is the path to the directory where Ray is installed, e.g.,
-  // something like /home/ubmutu/ray. This can be an absolute path or
-  // a relative path from the current working directory.
-  home: ""
-
   // IP of this node. if not provided, IP will be automatically detected.
   node-ip: ""