Simplify tox.ini

tox.ini

@@ -2,8 +2,14 @@
 envlist = py27, py34, py35, py36
 [testenv]
 extras = testing
+deps =
+# for testing the typing module
+    py27: typing
+    py34: typing
+# numpydoc for typing scipy stack
+    numpydoc
+    cov: coverage
 # Overwrite the parso version (only used sometimes).
-# deps =
 #     git+https://github.com/davidhalter/parso.git
 passenv = JEDI_TEST_ENVIRONMENT
 setenv =
@@ -19,26 +25,7 @@ setenv =
     env37: JEDI_TEST_ENVIRONMENT=37
 commands =
     pytest {posargs:jedi test}
-[testenv:py27]
-deps =
-# for testing the typing module
-    typing
-# numpydoc for typing scipy stack
-    numpydoc
-[testenv:py34]
-deps =
-    typing
-    numpydoc
-[testenv:py35]
-deps =
-    numpydoc
-[testenv:py36]
-deps =
-    numpydoc
 [testenv:cov]
-deps =
-    coverage
-    numpydoc
 commands =
     coverage run --source jedi -m pytest
     coverage report