Update .travis.yml

Author: den-run-ai

.travis.yml

@@ -22,10 +22,6 @@ matrix:
             - dotnet-hostfxr-2.0.0
             - dotnet-runtime-2.0.0
             - dotnet-sdk-2.0.0
-    - python: 3.3
-      env: *xplat-env
-      addons: *xplat-addons
-
     - python: 3.4
       env: *xplat-env
       addons: *xplat-addons
@@ -47,9 +43,6 @@ matrix:
         - BUILD_OPTS=
         - NUNIT_PATH=./packages/NUnit.*/tools/nunit3-console.exe
 
-    - python: 3.3
-      env: *classic-env
-
     - python: 3.4
       env: *classic-env