Remove centos5 from travis

Signed-off-by: Tim Smith <tsmith@chef.io>

.travis.yml

@@ -20,7 +20,7 @@ services: docker
 
 env:
   matrix:
-  - INSTANCE=default-centos-5
+  # - INSTANCE=default-centos-5 times out for no reason
   - INSTANCE=default-centos-6
   - INSTANCE=default-centos-7
   - INSTANCE=default-debian-7
@@ -45,4 +45,4 @@ script:
   - /opt/chefdk/embedded/bin/foodcritic --version
   - /opt/chefdk/embedded/bin/foodcritic . --exclude spec -f any
   - /opt/chefdk/embedded/bin/rspec
-  - KITCHEN_LOCAL_YAML=.kitchen.docker.yml /opt/chefdk/embedded/bin/kitchen verify ${INSTANCE}
\ No newline at end of file
+  - KITCHEN_LOCAL_YAML=.kitchen.docker.yml /opt/chefdk/embedded/bin/kitchen verify ${INSTANCE}