Use token from environment

Author: asherf

.travis.yml

@@ -54,8 +54,6 @@ deploy:
     # Testing with test pypi first
     server: https://test.pypi.org/legacy/ 
     user: __token__
-    password:
-      secure: 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
     on:
       branch:
       - master