Fix tox.ini comments

Author: leszekhanusz

tox.ini

@@ -18,8 +18,8 @@ conda_channels = conda-forge
 passenv = *
 setenv =
     PYTHONPATH = {toxinidir}
-    MULTIDICT_NO_EXTENSIONS = 1 ; Related to https://github.com/aio-libs/multidict
-    YARL_NO_EXTENSIONS = 1      ; Related to https://github.com/aio-libs/yarl
+    MULTIDICT_NO_EXTENSIONS = 1
+    YARL_NO_EXTENSIONS = 1
     GQL_TESTS_TIMEOUT_FACTOR = 10
 install_command = python -m pip install --ignore-installed {opts} {packages}
 whitelist_externals =