Stop uploading master docs

They're not very useful

Author: sfackler

.travis.yml

@@ -2,13 +2,8 @@ language: rust
 rust:
 - nightly
 - beta
+- stable
 addons:
   postgresql: 9.3
 script:
 - cargo test
-- cargo doc --no-deps
-after_success:
-- test $TRAVIS_PULL_REQUEST == "false" && test $TRAVIS_BRANCH == "master" && test $TRAVIS_RUST_VERSION == "nightly" && ./.travis/update_docs.sh
-env:
-  global:
-    secure: r3ugr11ER3l892nwRNDgpf3PMzZ+hucTGuhGHdatUiMGJ6us9E4inhG+dqvV8UoctMFjaO1tYxVHlwpgxo17Spnc6lopH+MrRHP7H42eEkUZbMEAKiHss/M1w6KocVEKsJdTtaNfN8V7MWAjCDAIL4txTbffBGnIfBhPGWVh09M=