PR# 15405 Testing tool does not remove referenced class from the generated {EQA_CLASS_ANCHOR_ROOT}.

When creating a manual test via the testing tool. After the test run, if one decides to exclude the test from the system (through .ecf), the project will not compile.
The reason appears to be not removing the corresponding class from the generated class {EQA_CLASS_ANCHOR_ROOT} in the EIFGENs.

1. Compile the project: https://svn.origo.ethz.ch/eiffelstudio/trunk/Src/library/i18n/tests/tests.ecf.
2. Run the only test in it. (Make should the test is actually compiled.)
3. Removed the following line in the file tests.ecf.
		<tests name="tests" location=".\" recursive="true">
			<option namespace="Tests">
			</option>
		</tests>
4. Click Compile.