Remove env switch.

Author: daspecster

tox.ini

@@ -62,9 +62,20 @@ setenv =
     PYTHONPATH =
 
 [testenv:codecov]
-passenv = CI TRAVIS_BUILD_ID TRAVIS TRAVIS_BRANCH TRAVIS_JOB_NUMBER TRAVIS_PULL_REQUEST TRAVIS_JOB_ID TRAVIS_REPO_SLUG TRAVIS_COMMIT
-deps = codecov>=1.4.0
-commands = codecov -e TOXENV
+basepython =
+    python2.7
+passenv =
+    CI TRAVIS_BUILD_ID TRAVIS TRAVIS_BRANCH TRAVIS_JOB_NUMBER TRAVIS_PULL_REQUEST TRAVIS_JOB_ID TRAVIS_REPO_SLUG TRAVIS_COMMIT
+deps =
+    {[testenv]deps}
+    {[grpc]deps}
+    coverage
+    codecov>=1.4.0
+commands =
+    {[testenv:cover]commands}
+    codecov
+setenv =
+    PYTHONPATH =
 
 [testenv:docs]
 basepython =