Remove core external lib from unit tests #3

Job	Run time
ci / check if job needs to run	2s
ci / prepare test matrix	14s
ci / MOODLE_402_STABLE - pgsql - php 8.1 - webservice_restful	2m 50s
ci / MOODLE_402_STABLE - mariadb - php 8.0 - webservice_restful	3m 7s
ci / MOODLE_403_STABLE - pgsql - php 8.0 - webservice_restful	3m 24s
ci / MOODLE_402_STABLE - mariadb - php 8.1 - webservice_restful	3m 34s
ci / MOODLE_402_STABLE - pgsql - php 8.0 - webservice_restful	3m 12s
ci / MOODLE_403_STABLE - mariadb - php 8.0 - webservice_restful	2m 55s
ci / MOODLE_403_STABLE - pgsql - php 8.2 - webservice_restful	3m 18s
ci / MOODLE_403_STABLE - mariadb - php 8.2 - webservice_restful	2m 53s
ci / MOODLE_404_STABLE - pgsql - php 8.1 - webservice_restful	3m 5s
ci / MOODLE_404_STABLE - mariadb - php 8.1 - webservice_restful	3m 17s
ci / MOODLE_404_STABLE - pgsql - php 8.3 - webservice_restful	3m 11s
ci / MOODLE_404_STABLE - mariadb - php 8.3 - webservice_restful	3m 1s
ci / Release to the Moodle plugin directory	0s
	38m 3s

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