refactor: remove deprecated methods in `Autoloader` #14292

Job	Run time
Setup PHP Version for Code Coverage	2s
Others (8.5) / Sanity Tests	2m 40s
Others (8.3) / Sanity Tests	2m 35s
Others (8.2) / Sanity Tests	3m 54s
Others (8.4) / Sanity Tests	2m 38s
SeparateProcess (8.3) / tests	3m 47s
SeparateProcess (8.2) / tests	3m 30s
SeparateProcess (8.5) / tests	3m 44s
SeparateProcess (8.4) / tests	3m 16s
CacheLive (8.2) / Cache Live Tests	2m 19s
CacheLive (8.5) / Cache Live Tests	2m 5s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 51s
CacheLive (8.4) / Cache Live Tests	2m 6s
DatabaseLive (8.4, MySQLi, 8.0) / tests	4m 25s
DatabaseLive (8.3, OCI8, 8.0) / tests	7m 5s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 14s
CacheLive (8.3) / Cache Live Tests	2m 6s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	5m 19s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 56s
DatabaseLive (8.5, OCI8, 8.0) / tests	6m 49s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 12s
DatabaseLive (8.5, Postgre, 8.0) / tests	2m 54s
DatabaseLive (8.2, SQLite3, 8.0) / tests	2m 54s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 37s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 28s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 46s
DatabaseLive (8.5, MySQLi, 8.0) / tests	5m 24s
DatabaseLive (8.2, MySQLi, 5.7) / tests	3m 48s
DatabaseLive (8.5, SQLite3, 8.0) / tests	2m 17s
DatabaseLive (8.4, OCI8, 8.0) / tests	7m 12s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 29s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 12s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 17s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	5m 24s
Upload coverage results to Coveralls / coveralls	46s
	2h 12m 1s

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