Use Trusty platform for TravisCI

Author: gracjan

.travis.yml

@@ -1,6 +1,6 @@
 language: emacs-lisp
 sudo: required
-dist: precise
+dist: trusty
 
 env:
   matrix:
@@ -32,7 +32,6 @@ install:
         sudo apt-get install -qq emacs-snapshot emacs-snapshot-el;
     fi
   - if [ "$TARGET" = "deploy-manual" ]; then
-        sudo add-apt-repository -y ppa:gracjanpolak/ppa &&
         sudo apt-get update -qq &&
         sudo apt-get install -qq texinfo;
     fi