Bug 156497 [Regression][Acceptance]Report isn't refreshed when delete used library file.
Description: Report isn't refreshed when delete used library file. Steps to reproduce: 1.New a library, add a label, input actuate. 2.New a report, extend lib.label 3.Delete the library file. 4.Refresh the report in Outline of the report Expected result: Empty label in Layout. Actual result: label with content "actuate" in Layout.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* 
	 * @return the iterator over all structures of color palette.
	 * @see CustomColorHandle
	 */
	public Iterator customColorsIterator( )
	{
		return getStructureList( COLOR_PALETTE_PROP ).iterator( );
	}
	/**
	 * Drops a config variable.
	 * 
	 * @param name
	 *            config variable name
	 * @throws SemanticException
	 *             if no config variable is found.
	 * @deprecated
	 */
	public void dropConfigVariable( String name ) throws SemanticException
	{
		PropertyHandle propHandle = this.getPropertyHandle( CONFIG_VARS_PROP );
		int posn = findConfigVariablePos( name );
		if ( posn < 0 )
			throw new PropertyValueException( getElement( ), propHandle
					.getPropertyDefn( ), name,
					PropertyValueException.DESIGN_EXCEPTION_ITEM_NOT_FOUND );
		propHandle.removeItem( posn );
	}
	/**
	 * Drops an embedded image handle list from the design. Each one in the list
	 * is the instance of <code>EmbeddedImageHandle</code>.