fix(ccwplugin): remove early IEclipseContext.get(IEventBroker)
fix(ccwplugin): remove early IEclipseContext.get(IEventBroker)

By getting IEventBroker too early in CCWPlugin.start(), an "Unable to process "EventBroker.logger"
exception was triggered. This patch solves the problem (but also removes the custom event logging).

laurentpetit/ccw,ccw-ide/ccw,ccw-ide/ccw,laurentpetit/ccw,ccw-ide/ccw,laurentpetit/ccw