Werk #13016: Refactor event bulk delete method

Component	Event Console
Title	Refactor event bulk delete method
Date	Jun 2, 2022
Level	Trivial Change
Class	New Feature
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0b1 Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.1.0p2 Checkmk Enterprise (CEE), Checkmk MSP (CME) 2.0.0p26 Checkmk Enterprise (CEE), Checkmk MSP (CME)

Make delete all events much faster. This is achieved by running one delete command with a list of events to delete instead of a separate command for each event.

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