travis: change OPAMCRITERIA

Don't try to minimize not up-to-date packages at all.

Author: seliopou

.travis-ci.sh

@@ -26,6 +26,7 @@ opam --git-version
 (cd $HOME && curl "https://s3.amazonaws.com/opam-street/opam-street.${OCAML_VERSION}_${OPAM_VERSION}.tar.gz" | tar xz)
 eval `opam config env`
 export CAML_LD_LIBRARY_PATH="$EXTRA_LD_LIBRARY_PATH:$CAML_LD_LIBRARY_PATH"
+export OPAMCRITERIA="-removed,-changed,-notuptodate"
 opam install ${OPAM_DEPENDS}
 
 for fdep in $FRENETIC_DEPENDS; do