How can I remove communicationEvent from workeffort?

[bentry]

In WorkEffort app, in the createWorkEffort screen,
a CommunicationEvent is attached woekeffort, but i
only want to display the workeffort information.

I  have try this:
remove
<field name="communicationEventId" map-name="context"><lookup target-form-name="LookupCommEvent"/></field>
from EditWorkEffort form.

the CommunicationEvent is also appear.



How can I remove it?