[WPB-8881] Move email update and remove operations to effects

[mdimjasevic]

This is a refactoring PR about user email update and remove operations.

Tracked by https://wearezeta.atlassian.net/browse/WPB-8881.

Checklist

• [x] Add a new entry in an appropriate subdirectory of changelog.d
• [x] Read and follow the PR guidelines