Tests

Remove some Ds stubs for functionMap #21999

Job	Run time
Integration tests (ubuntu-latest)	51s
Determine levels tests matrix	46s
Integration tests (windows-latest)	51s
Tests with old PHPUnit (8.0, windows-latest)	50s
Tests (8.4, windows-latest)	50s
Tests with old PHPUnit (7.4, ubuntu-latest)	51s
Tests (8.3, ubuntu-latest)	52s
Tests (8.2, windows-latest)	44s
Tests (8.2, ubuntu-latest)	55s
Tests (8.3, windows-latest)	51s
Tests with old PHPUnit (8.1, ubuntu-latest)	42s
Tests (8.5, ubuntu-latest)	56s
Tests with old PHPUnit (7.4, windows-latest)	53s
Tests with old PHPUnit (8.0, ubuntu-latest)	43s
Tests (8.5, windows-latest)	53s
Tests with old PHPUnit (8.1, windows-latest)	52s
Tests (8.4, ubuntu-latest)	55s
Levels tests	1s
	14m 16s

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