Remove haddock from travis for now

See commercialhaskell/stack#1292

Author: alanz

.travis.yml

@@ -28,8 +28,8 @@ install:
   - ./travis_long stack +RTS -N2 -RTS build --only-snapshot --pedantic
 
 script:
-  - ./travis_long stack +RTS -N2 -RTS build --haddock
-  - ./travis_long stack clean
+  # - ./travis_long stack +RTS -N2 -RTS build --haddock
+  # - ./travis_long stack clean
   - ./travis_long stack +RTS -N2 -RTS build --test --pedantic
   # - ./travis_long stack +RTS -N2 -RTS build --test --haddock