Bug 192171 Layout still display css style from library after removing library.[01]
Description: Layout still display css style from library after removing library. Build number:2.2.0.v20070612 Steps to reproduce: 1. Add a css file in Library Explorer 2. New a library file. 3. Use css file in library default theme. 4. New a report and use the library. 5. Insert a label and apply the style from library. 6. Remove the library in report Outline. Expected result: Style effect disappears from label in Layout. Actual result: Label in Layout still displays the style effect. Error log:N/A
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/library/LibraryThemeTest.java
{
	/*
	 * @see TestCase#setUp()
	 */
	protected void setUp( ) throws Exception
	{
		super.setUp( );
	}
	/**
	 * Tests css style sheet in library theme.
	 * <tr>
	 * <td> add css file
	 * <td> check reference is unreslove or not </tr>
	 * 
	 * <tr>
	 * <td> drop css file
	 * <td> check reference is unreslove or not </tr>
	 * 
	 * @throws Exception
	 */