fix: Remove useless legacy autoloader #8222

Job	Run time
changes	7s
php8.1-s3-minio	1m 8s
php8.1-s3-multibucket-minio	1m 14s
object-store-primary-summary	7s
php8.1-s3-minio	11m 27s
php8.1-s3-multibucket-minio	10m 28s
changes	7s
object-store-primary-summary	6s
	24m 44s

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