API Deprecate API that's being removed in CMS 6 (#3036) #1054

Job	Run time
CI / Context	1s
CI / Generate matrix	24s
CI / Check governance	1s
CI / 8.1 prf-low mysql57 phpunit all	3m 15s
CI / 8.2 mariadb phpunit all	3m 23s
CI / 8.3 mysql80 phpunit all	3m 26s
CI / 8.3 mysql84 phpunit all	3m 19s
CI / 8.1 mysql57 phplinting	2m 17s
CI / 8.1 mysql57 endtoend root job1	10m 0s
CI / 8.3 mysql80 endtoend root job1	10m 8s
CI / 8.1 mysql57 endtoend root job2	7m 35s
CI / 8.3 mysql80 endtoend root job2	7m 46s
CI / 8.1 mysql57 endtoend root job3	6m 59s
CI / 8.3 mysql80 endtoend root job3	7m 57s
CI / 8.1 mysql57 js	4m 11s
CI / Dispatch tag patch release	2s
	1h 10m 44s

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