[events]: remove dead code
[events]: remove dead code

The code to coalesce events in the queue was never turned on and is made redundant by the new events.from() behaviour

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@eu.citrix.com>

koushikcgit/xcp-networkd,robhoes/squeezed,djs55/squeezed,simonjbeaumont/xcp-rrdd,sharady/xcp-networkd,johnelse/xcp-rrdd,koushikcgit/xcp-networkd,djs55/xcp-rrdd,johnelse/xcp-rrdd,djs55/xcp-networkd,sharady/xcp-networkd,simonjbeaumont/xcp-rrdd,djs55/xcp-rrdd,koushikcgit/xcp-rrdd,koushikcgit/xcp-rrdd,koushikcgit/xcp-rrdd,djs55/xcp-networkd