IGNITE-6679 Clean up some deprecated cache metrics

[Nikita Amelchev]

Hello, Igniters.

I have removed deprecated metrics [1]. Please, review [2]. Tests look good
[3].

1. https://issues.apache.org/jira/browse/IGNITE-6679
2. https://reviews.ignite.apache.org/ignite/review/IGNT-CR-390
3.
https://ci.ignite.apache.org/project.html?projectId=Ignite20Tests&tab=projectOverview&branch_Ignite20Tests=pull%2F2962%2Fhead

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Best wishes,
Amelchev Nikita