Bug 153040 Template definition should be removed after the report item is deleted
Steps to reproduce: 1.New a report, extends lib.label 2.Convert the label to template report item, and revert it back to the report item 3.Delete the label 4.Remove the included library Expected result: Library can be removed Actual result: A BIRT exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:2.1.0.v20060808-0630 Error Code:Error.LibraryException.LIBRARY_HAS_DESCENDENTS Error Message:The library "Lib" can no be dropped because it has descendents "NewLabel" in the current module.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/MetaDataDictionary.java
MetaDataException.DESIGN_EXCEPTION_MISSING_VALIDATOR_NAME );
		if ( valueValidators.containsKey( name ) )
			throw new MetaDataException( new String[]{name},
					MetaDataException.DESIGN_EXCEPTION_DUPLICATE_VALIDATOR_NAME );
		valueValidators.put( name, validator );
	}
	/**
	 * Return a property value validator given its name.
	 * 
	 * @param name
	 *            name of the value validator.
	 * @return A property value validator.
	 */
	public IValueValidator getValueValidator( String name )
	{
		return (IValueValidator) valueValidators.get( name );
	}
	/**
	 * Adds the semantic validator.
	 * 
	 * @param validator
	 *            the validator to add
	 * @throws MetaDataException
	 *             if the validator name is missing or duplicates.
	 */
	public void addSemanticValidator( AbstractSemanticValidator validator )
			throws MetaDataException
	{
		String name = validator.getName( );
		if ( StringUtil.isBlank( name ) )