travis: don't try to use sudo in container.

* .travis.yml (before_install): This is no longer needed to get a
working lymal installation on travis.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>

Author: gvvaughan

.travis.yml

@@ -11,10 +11,6 @@ env:
     - LUA="luajit=2.0"
 
 before_install:
-  # Put back the links for libyaml, which are missing on recent Travis VMs
-  - test -f /usr/lib/libyaml.so ||
-    sudo find /usr/lib -name 'libyaml*' -exec ln -s {} /usr/lib \;
-
   - pip install hererocks
   - hererocks here -r^ --$LUA
   - export PATH=$PWD/here/bin:$PATH