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
if ( modelParam.isInput( ) )
					{
						String defaultValueExpr = modelParam.getDefaultValue( );
						if ( defaultValueExpr != null )
							paramBindingCandidates.put( modelParam.getName( ),
									defaultValueExpr );
					}
				}
			}
			
			elmtIter = modelDataSet.paramBindingsIterator( );
			if ( elmtIter != null )
			{
				while ( elmtIter.hasNext( ) )
				{
					ParamBindingHandle modelParamBinding = ( ParamBindingHandle ) elmtIter
							.next( );
					
					paramBindingCandidates.put( modelParamBinding.getParamName( ),
							modelParamBinding.getExpression( ) );
				}
			}
			
			if ( paramBindingCandidates.size( ) > 0 )
			{
				elmtIter = paramBindingCandidates.keySet( ).iterator( );
				while ( elmtIter.hasNext( ) )
				{
					Object paramName = elmtIter.next( );