Bug 121498 When datasource/dataset deleted, the datasource/dataset property binding element haven't been deleted
When deleted the datasource/dataset, the datasource/dataset property binding element haven't been deleted. Expected result: This operation must be a transaction.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
libraries = new ArrayList( );
		URL url = findResource( libraryFileName, IResourceLocator.LIBRARY );
		if ( url == null )
		{
			DesignParserException ex = new DesignParserException(
					new String[]{libraryFileName},
					DesignParserException.DESIGN_EXCEPTION_FILE_NOT_FOUND );
			List exceptionList = new ArrayList( );
			exceptionList.add( ex );
			throw new DesignFileException( libraryFileName, exceptionList );
		}
		try
		{
			Library library = LibraryReader.getInstance( ).read( session, this,
					url.toString( ), namespace, url.openStream( ) );
			if ( StringUtil.isBlank( namespace ) )
			{
				library.setNamespace( StringUtil
						.extractFileName( libraryFileName ) );
			}
			return library;
		}
		catch ( IOException e )
		{
			DesignParserException ex = new DesignParserException(
					new String[]{libraryFileName},
					DesignParserException.DESIGN_EXCEPTION_FILE_NOT_FOUND );
			List exceptionList = new ArrayList( );
			exceptionList.add( ex );
			throw new DesignFileException( libraryFileName, exceptionList );