Remove expired 17track.net packages from entity registry

[bachya]

Description:

This PR ensures that when a package is delivered, its corresponding sensor is removed from the UI and the entity registry.

Related issue (if applicable): fixes #22994

Pull request in home-assistant.io with documentation (if applicable): N/A

Example entry for configuration.yaml (if applicable):

sensor:
  - platform: seventeentrack 
    username: !secret 17track_username
    password: !secret 17track_password    

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.

[codecov]

Codecov Report

Merging #23001 into dev will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev   #23001      +/-   ##
==========================================
- Coverage   93.95%   93.95%   -0.01%     
==========================================
  Files         448      448              
  Lines       36750    36750              
==========================================
- Hits        34529    34528       -1     
- Misses       2221     2222       +1

Impacted Files	Coverage Δ
homeassistant/components/uk_transport/sensor.py	93.43% <0%> (-0.73%)	⬇️

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[Spirituss]

Hello,
I've tested it and unfortunately items still stay on the registry after I mark them as 'Archived' in the 17track app.
HASS does see updated component, here are the lines from the log:

2019-04-11 21:58:06 WARNING (MainThread) [homeassistant.loader] You are using a custom component for seventeentrack.sensor which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you do experience issues with Home Assistant.```

[bachya]

@Spirituss I believe what I've done here covers the case of a package being delivered, but misses the case of archiving it. I'm going to merge this and open a separate PR; will be in touch.

[Spirituss]

Hello,
I’ve also tested and it doesn’t work. I see the items in the registry.