Create a jira filter. Edit a confluence page and embed the JIra Issues Filter macro into the page. In the configuration pop up, after selecting a filter, you are presented with a list of fields including Team. Add that field to the list of fields to display and the field doesnt get displayed. Note the field is included as a column in the JIra filter and moreover, if one creates a gadget in a Jira Dashboard of the same type, the team field IS displayed!
The workaround is create a dashboard in Jira, and embed it into the Confluence page using the iframe macro. Not pretty but it works