apns: Remove T-Mobile UK

* It's EE now
* Should not be required since 2015:
  "In 2010, it merged with Orange UK to form a joint venture,
  Everything Everywhere, in 2010, which continued to operate the
  T-Mobile and Orange brands until March 2015 and allowed T-Mobile
  customers to utilise Orange's 2G signal and vice versa.
  In 2012, Everything Everywhere launched a new network, branded EE."
  -- https://en.wikipedia.org/wiki/T-Mobile_UK

Fixes: https://gitlab.com/LineageOS/issues/android/-/issues/3069
Change-Id: Id94a6e156f20b484ea3d23cd3a30f5f9e796b117