Blocks: remove gutenberg refs in PHP files #77040

Job	Run time
PHP coding standards	19s
Mobile	6m 2s
Compute previous WordPress version	1s
JavaScript (14)	7m 34s
PHP 5.6 on ubuntu-latest	8m 19s
PHP 5.6 multisite on ubuntu-latest	9m 2s
PHP 7.0 on ubuntu-latest	8m 7s
PHP 7.0 multisite on ubuntu-latest	8m 6s
PHP 7.1 on ubuntu-latest	8m 14s
PHP 7.1 multisite on ubuntu-latest	11m 27s
PHP 7.2 on ubuntu-latest	7m 49s
PHP 7.2 multisite on ubuntu-latest	8m 24s
PHP 7.3 on ubuntu-latest	10m 54s
PHP 7.3 multisite on ubuntu-latest	9m 46s
PHP 7.4 on ubuntu-latest	8m 18s
PHP 7.4 multisite on ubuntu-latest	10m 28s
PHP 8.0 on ubuntu-latest	8m 10s
PHP 8.0 multisite on ubuntu-latest	10m 52s
PHP 8.1 on ubuntu-latest	9m 58s
PHP 8.1 multisite on ubuntu-latest	9m 55s
PHP 8.2 on ubuntu-latest	8m 27s
PHP 8.2 multisite on ubuntu-latest	11m 8s
PHP 5.6 (WP 6.1.3) on ubuntu-latest	8m 26s
PHP 7.4 (WP 6.1.3) on ubuntu-latest	7m 56s
PHP 8.2 (WP 6.1.3) on ubuntu-latest	9m 40s
PHP	1s
	3h 27m 23s

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