remove deprecated module lxmldocument

Author: eliasdorneles

scrapy/selector/lxmldocument.py

@@ -26,7 +26,6 @@ tests/test_pipeline_files.py
 tests/test_pipeline_images.py
 tests/test_proxy_connect.py
 tests/test_selector_csstranslator.py
-tests/test_selector_lxmldocument.py
 tests/test_selector.py
 tests/test_spidermiddleware_depth.py
 tests/test_spidermiddleware_httperror.py