Revert "Add total event, unencrypted message, and e2ee event counts to stats reporting"#18346

devonh merged 3 commits intodevelopelement-hq/synapse:developfrom

revert-18260-anoa/export_total_message_countelement-hq/synapse:revert-18260-anoa/export_total_message_countCopy head branch name to clipboard