Ian,
To exclude all tables you go to the LayerList widget folder and open the LayerListView.js and comment out the getTableInfoArray portion of the postCreate function:
postCreate: function() {
array.forEach(this.operLayerInfos.getLayerInfoArray(), function(layerInfo) {
this.drawListNode(layerInfo, 0, this.layerListTable, true);
}, this);
/*array.forEach(this.operLayerInfos.getTableInfoArray(), function(layerInfo) {
this.drawListNode(layerInfo, 0, this.tableListTable, true);
}, this);*/
},