We do not need to check coverage for this project.

--- texttable-1.7.0/tox.ini.orig
+++ texttable-1.7.0/tox.ini
@@ -4,6 +4,5 @@
 [testenv]
 deps =
     pytest
-    pytest-cov
     cjkwrap
-commands = pytest --cov-report=term-missing --cov=texttable tests.py
+commands = pytest tests.py