Tutorial - Adjust quickstart

It seems that there is no CLI command to easily create a user
Remove the second user from the Markdown
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docs/tutorial/quickstart.md

@@ -56,10 +56,6 @@ Now sync your database for the first time:
 We'll also create an initial user named `admin` with a password of `password123`. We'll authenticate as that user later in our example.
 
     python manage.py createsuperuser --email admin@example.com --username admin
-    
-We'll also create a second user named `tom`.
-
-    python manage.py createuser --email tom@example.com --username tom
 
 Once you've set up a database and the initial user is created and ready to go, open up the app's directory and we'll get coding...
 
@@ -181,12 +177,6 @@ We can now access our API, both from the command-line, using tools like `curl`..
                 "url": "http://127.0.0.1:8000/users/1/",
                 "username": "admin"
             },
-            {
-                "email": "tom@example.com",
-                "groups": [],
-                "url": "http://127.0.0.1:8000/users/2/",
-                "username": "tom"
-            }
         ]
     }
 
@@ -207,12 +197,6 @@ Or using the [httpie][httpie], command line tool...
                 "url": "http://localhost:8000/users/1/",
                 "username": "paul"
             },
-            {
-                "email": "tom@example.com",
-                "groups": [],
-                "url": "http://127.0.0.1:8000/users/2/",
-                "username": "tom"
-            }
         ]
     }