Reqs:

• Remove it from the optaplanner-bom here: https://github.com/kiegroup/droolsjbpm-build-bootstrap/blob/master/optaplanner-bom/pom.xml#L209
• Delete that module in the optaplanner repository: optaplanner/optaplanner-integration/optaplanner-core-gwt
• Do a find in path for "optaplanner-core-gwt". Check if docs don't mention it.

Only remove it only on master, now that optaweb-employee-rostering master doesn't need it any more.

Note: this is independent of the workmodels stuff.