Drop old changelog entries

Signed-off-by: Randy Barlow <randy@electronsweatshop.com>

python-webencodings.spec

@@ -96,12 +96,3 @@ py.test-3
 
 * Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
-
-* Thu Jul 27 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1-3
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
-
-* Tue Jul 25 2017 Randy Barlow <bowlofeggs@fedoraproject.org> - 0.5.1-2
-- Set the PYTHONPATH when building docs so the library is found.
-
-* Tue Jul 25 2017 Randy Barlow <bowlofeggs@fedoraproject.org> - 0.5.1-1
-- Initial release