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

java/example.conf

@@ -6,11 +6,6 @@
 # For config file format, see 'https://github.com/lightbend/config/blob/master/HOCON.md'.
 
 ray {
-  // 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 = "/path/to/your/ray/home"
-
   // Run mode, available options are:
   //
   // `SINGLE_PROCESS`: Ray is running in one single Java process, without Raylet backend,