Revert "Resolve a retain cycle"
Revert "Resolve a retain cycle"

This reverts commit 3e419aac3f57e7589eff9a745ae0a62b14221cee.

matrix-org/matrix-ios-sdk,matrix-org/matrix-ios-sdk,matrix-org/matrix-ios-sdk,matrix-org/matrix-ios-sdk,matrix-org/matrix-ios-sdk