Bug 136279 Structure and table datatypes should be hidden.
Description: Structure and table datatype should be hidden. Steps to reproduce: In table data binding, I saw structure and table two datatypes. They are not supported now, so they should be removed.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/adapter/ModelDteApiAdapter.java
{
			while ( elmtIter.hasNext( ) )
			{
				ExtendedPropertyHandle modelProp = ( ExtendedPropertyHandle ) elmtIter
						.next( );
				dteSource.addPrivateProperty( modelProp.getName( ), modelProp
						.getValue( ) );
			}
		}
		return dteSource;
	}
	/**
	 * 
	 * @param source
	 * @return
	 */
	IScriptDataSourceDesign newScriptDataSource( ScriptDataSourceHandle source )
	{
		ScriptDataSourceDesign dteSource = new ScriptDataSourceDesign( source
				.getQualifiedName( ) );
		IScriptDataSourceEventHandler eventHandler = new ScriptDataSourceScriptExecutor(
				source, context );
		dteSource.setEventHandler( eventHandler );
		
		adaptBaseDataSource( source, dteSource );
		
		dteSource.setOpenScript( source.getOpen( ) );
		dteSource.setCloseScript( source.getClose( ) );
		return dteSource;
	}