Unit

Remove unneeded VirtualPage "__atk_tab" code #30536

Job	Run time
Docs	30s
Smoke (latest, Phpunit)	28s
Unit (7.4, Phpunit)	2m 6s
Smoke (latest, CodingStyle)	49s
Behat (8.1, Chrome)	5m 15s
Unit (7.4, Phpunit Lowest)	2m 25s
Smoke (latest, StaticAnalysis)	37s
Behat (8.1, Chrome Lowest)	5m 24s
Unit (8.0, Phpunit)	2m 10s
Behat (8.2, Chrome)	5m 35s
Unit (8.0, Phpunit Lowest)	2m 10s
Behat (8.2, Chrome Lowest)	5m 30s
Unit (8.1, Phpunit)	2m 5s
Behat (8.3, Chrome)	5m 7s
Unit (8.1, Phpunit Lowest)	1m 58s
Behat (8.3, Chrome Lowest)	5m 25s
Unit (8.2, Phpunit)	2m 0s
Behat (latest, Firefox)	5m 36s
Unit (8.2, Phpunit Lowest)	2m 3s
Behat (latest, Chrome Slow)	9m 34s
Unit (8.3, Phpunit)	2m 3s
Behat (latest, Firefox Slow)	7m 52s
Unit (8.3, Phpunit Lowest)	2m 5s
Unit (latest, Phpunit Burn)	5m 20s
	1h 24m 7s

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