Remove naming config options

source/_components/plex.markdown

@@ -93,29 +93,18 @@ You can customize the Plex component by adding any of the variables below to you
 # Example configuration.yaml entry
 media_player:
   - platform: plex
-    entity_namespace: 'plex'
     show_all_controls: false
-    use_custom_entity_ids: true
     use_episode_art: true
     remove_unavailable_clients: true
     client_remove_interval: 600
 ```
 
 {% configuration %}
-entity_namespace:
-  description: "Prefix for entity ID's. Useful when using overlapping components (ex. Apple TV and Plex components when you have Apple TV's you use as Plex clients). Go from _media_player.playroom2_ to _media_player.plex_playroom_"
-  required: false
-  type: string
 show_all_controls:
   description: "Forces all controls to display. Ignores dynamic controls (ex. show volume controls for client A but not for client B) based on detected client capabilities. This option allows you to override this detection if you suspect it to be incorrect."
   required: false
   default: false
   type: boolean
-use_custom_entity_ids:
-  description: "Name Entity ID's by client ID's instead of friendly names. HA assigns entity ID's on a first come first serve basis.  When you have identically named devices connecting (ex. media_player.plex_web_safari, media_player.plex_web_safari2), you can't reliably distinguish and or predict which device is which.  This option avoids this issue by using unique client ID's (ex. media_player.dy4hdna2drhn)."
-  required: false
-  default: false
-  type: boolean
 use_episode_art:
   description: Display TV episode art instead of TV show art.
   required: false