bug: Remove expiry checks for routing to prevent dropped mobile UAID

[jrconlin]

Closes #1161

[codecov-io]

Codecov Report

Merging #1162 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master   #1162   +/-   ##
======================================
  Coverage     100%    100%           
======================================
  Files          60      60           
  Lines       10077   10069    -8     
======================================
- Hits        10077   10069    -8

Impacted Files	Coverage Δ
autopush/web/registration.py	100% <ø> (ø)	⬆️
autopush/db.py	100% <ø> (ø)	⬆️
autopush/tests/test_db.py	100% <100%> (ø)	⬆️

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