MNT: Remove 3.3 appveyor build.

dopplershift · dopplershift · commit f4a588eaebf0 · 2017-01-31T17:35:35.000-07:00
Matplotlib only has 1.4 wheels for that, which we're removing here.
diff --git a/appveyor.yml b/appveyor.yml
@@ -14,7 +14,6 @@ environment:
 
   matrix:
       - PYTHON_VERSION: "2.7"
-      - PYTHON_VERSION: "3.3"
       - PYTHON_VERSION: "3.4"
       - PYTHON_VERSION: "3.5"
 
