[cleanup] cleanup AbstractRector from DONT_TRAVERSE_* enums as no longer supported, all rules work without it now #31637

Job	Run time
Preload php-parser Order	18s
Run with Space in Directory	22s
PHPStan	1m 24s
Help and Version	20s
Commented Code	22s
Active Classes	31s
Check fixture classes are different to nodes	20s
Finalize classes	28s
Check before/after test fixture on no-changes	25s
Detect composer dependency issues	18s
Check no "*.php" files in rules Fixture directory	26s
PHP Linter	34s
Composer Validate	18s
Compatible PHPStan versions	36s
	6m 42s

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