Reitti v2.4.2 — Fix: remove OwnTracks ping handling

This hotfix removes handling of OwnTracks “ping” messages to prevent incorrect timestamps from being recorded.

Fix

• Drop OwnTracks ping support (#458 by @dgraf-gh)
  Ping messages were being adjusted to use the import time as their timestamp, which is incorrect. Reitti now ignores OwnTracks ping events entirely. Regular OwnTracks location and transition events are unaffected.

Full Changelog: v2.4.1...v2.4.2