Implemented the remove_unit functionality

app/store/env/python.js

 'use strict';
 
 /**
  * The Python store environment.
  *
  * @module env
  * @submodule env.python
  */
 
 YUI.add('juju-env-python', function(Y) {
@@ skipping 147 matching lines @@
      * @method remove_units
      * @param {Array} unit_names The units to be removed.
      * @param {Function} callback A callable that must be called once the
          operation is performed.
      * @return {undefined} Sends a message to the server only.
      */
     remove_units: function(unit_names, callback) {
       this._send_rpc({
         'op': 'remove_units',
         'unit_names': unit_names}, callback, true);
-
     },
 
     /**
      * Add a relation between two services.
      *
      * @method add_relation
      * @param {Object} endpointA An array of [service, interface] representing
          the first endpoint to connect.
      * @param {Object} endpointB An array of [service, interface] representing
          the second endpoint to connect.
@@ skipping 278 matching lines @@
   environments.PythonEnvironment = PythonEnvironment;
 
 }, '0.1.0', {
   requires: [
     'base',
     'json-parse',
     'json-stringify',
     'juju-env-base'
   ]
 });