[WIP] disable non-responding travis windows builds

it is basically not running

Author: tesuji

.travis.yml

@@ -48,8 +48,8 @@ matrix:
       env: BASE_TESTS=true
     - os: linux
       env: BASE_TESTS=true
-    - os: windows
-      env: CARGO_INCREMENTAL=0 BASE_TESTS=true OS_WINDOWS=true
+    # - os: windows
+    #   env: CARGO_INCREMENTAL=0 BASE_TESTS=true OS_WINDOWS=true
 
     # Builds that are only executed when a PR is r+ed or a try build is started
     # We don't want to run these always because they go towards