Revert "Add dump reset for rcs metrics"

This reverts commit 2e3977b6.

The original commit was on sc-v2.

Reason for revert:
* Concatenating contents in dumpsys will break dumpsys metrics decoding;
* Reseting statsd metrics together with dumpsys metrics is unexpected.

Test: build
Bug: 238363062
Bug: 204820968
Bug: 207321347

Change-Id: I63e63df473483249af0a5b59bf85fd8905b9d710
(cherry picked from commit 6b7c094e)