API Remove code which is being migrated to a new TinyMCE module #3901

Job	Run time
CI / Generate matrix	22s
CI / Context	1s
CI / 8.3 prf-low mariadb phpunit framework-core	1m 49s
CI / Check governance	0s
CI / 8.3 mysql80 phpunit framework-core	1m 35s
CI / 8.4 mysql84 phpunit framework-core	1m 55s
CI / 8.3 prf-low mariadb phpunit framework-orm	1m 38s
CI / 8.3 mysql80 phpunit framework-orm	1m 37s
CI / 8.4 mysql84 phpunit framework-orm	1m 35s
CI / 8.3 mysql80 phplinting	2m 24s
CI / 8.3 mysql80 phpunit framework-cache-only inmemorycache	2m 14s
CI / Dispatch tag patch release	0s
	15m 10s

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