Support for DELETE /_matrix/client/v3/devices/{deviceId} in compatibility layer

[matrixbot]

This issue was originally created by @hughns at matrix-org/matrix-authentication-service#1534.

@sandhose I forget: is there a reason not to do this?

If we don't do it then the session managers in existing clients (including Element Web/iOS/Android) will need to make a change.

[matrixbot]

This comment was originally posted by @pmaier1 at matrix-org/matrix-authentication-service#1534 (comment).

Interesting finding on this element-hq/element-web#25949 (comment)

[matrixbot]

This comment was originally posted by @hughns at matrix-org/matrix-authentication-service#1534 (comment).

We actually don't want to do this and instead non-OIDC clients should become "OIDC aware" as described in MSC3824 including the new requirements around session management.