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
}
	/**
	 * Creates a new DtE API InputParamBinding from a model's binding. Could
	 * return null if no expression is bound.
	 */
	IInputParameterBinding newInputParamBinding(
			ParamBindingHandle modelInputParamBndg )
	{
		
		return newInputParamBinding( modelInputParamBndg.getParamName( ),
				modelInputParamBndg.getExpression( ) );
	}
	private IInputParameterBinding newInputParamBinding( String paramName,
			String paramValue )
	{
		if ( paramValue == null )
			return null; 
		ScriptExpression paramValueExpr = new ScriptExpression( paramValue );
		return new InputParameterBinding( paramName, paramValueExpr );
	}
	/**
	 * Creates a new DtE API Computed Column from a model computed column. Could
	 * return null if no expression is defined.
	 * 
	 * @throws EngineException
	 */
	IComputedColumn newComputedColumn( ComputedColumnHandle modelCmptdColumn )
			throws EngineException
	{