Remove non-existing argument

There is no container argument in create_container_config. This is probably a leftover when this was copied from the Client.start documentation

Author: Philipp Moeller

docs/hostconfig.md

@@ -66,7 +66,6 @@ for example:
 
 **Params**
 
-* container (str): The container to start
 * binds: Volumes to bind. See [Using volumes](volumes.md) for more information.
 * port_bindings (dict): Port bindings. See [Port bindings](port-bindings.md)
   for more information.
@@ -99,4 +98,4 @@ for example:
 >>> from docker.utils import create_host_config
 >>> create_host_config(privileged=True, cap_drop=['MKNOD'], volumes_from=['nostalgic_newton'])
 {'CapDrop': ['MKNOD'], 'LxcConf': None, 'Privileged': True, 'VolumesFrom': ['nostalgic_newton'], 'PublishAllPorts': False}
-```
+```