Remove unused code

* Revert "Remove flaky tests"

This reverts commit c4de9fdcbeca6075574b578e05916a08231647af.

* Change reconfigure test to be based on data

* Don't assert using internals

* Fix assertions to be on config entry

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Add Israel Rail integration

* israel_rail tests

* israel_rail tests

* 1. use entry.runtime
2. DataConnection - data class
3. remove unique id from coordinator
4. use EntityDescription

* add a list of stations in user form

* 1. extend ConfigEntry
2. remove unused pop
3. use IsraelRailSensorEntityDescription to have only one kind of Sensor
4. add test for already configured
5. use snapshot in test

* change user step description

* 1. ConfigEntry[IsraelRailDataUpdateCoordinator]
2. remove redundant attributes
3. use snapshot_platform helper

* remove attr

* remove attr

* move test to test_init.py

* Fix

* Fix

* Fix

* Fix

* fix timezone

* fix

* fix

---------

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Add time platform

* Apply PR feedback

* Remove obsolete Exception raise

* Fix bad access to runtime_data when not assigned

* Fix review comment

* Clean up if statements

Co-authored-by: Maciej Bieniek <478555+bieniu@users.noreply.github.com>