Revert "travis.yml: install "happy" which is a dependency for haskell-src-exts"

This reverts commit 5d631c39efab1fdcae829f8048be1925ccaefc39. This commit is not
required anymore, since hlint test is removed and so haskell-src-exts is not
needed.

diff --git a/.travis.yml b/.travis.yml
index 993167b9cf677d627c21ba269aa4231a50f301da..5d11581d088e408569fdd779ced9c6bc3398b2ec 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,2 @@
 language: haskell
 ghc: 7.8
-install:
-  # Happy needs to be updated for haskell-src: https://github.com/haskell-suite/haskell-src-exts/issues/64
-  - cabal install happy
-  - cabal install --only-dependencies --enable-tests
\ No newline at end of file