Avoid the use of unmaintained --boxed with pytest

Peque · Peque · commit bcc4d0a2916d · 2018-03-27T14:51:19.000+02:00
diff --git a/tox.ini b/tox.ini
@@ -21,7 +21,7 @@ deps =
     -e.[test]
 commands =
     pytest --basetemp={envtmpdir} --cache-clear -sv --cov \
-        {posargs:-n 8 --boxed}
+        {posargs:-n 8}
 
 [testenv:lint]
 deps =
