build: do not add the ocaml repo

Signed-off-by: erwan <erwan.jahier@univ-grenoble-alpes.fr>
7 jobs for master in 3 minutes and 58 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Build
passed build #243445

00:02:28

passed build #243415

00:01:51

 
  Test
failed test_opam_test #243447
allowed to fail

00:00:42

failed test_opam_test #243433
allowed to fail

00:00:36

passed test_opam_test #243416

00:01:47

failed test_opam_test #243418
allowed to fail

00:00:33

 
  Release
passed release #243417

00:00:47

 
Name Stage Failure
failed
test_opam_test Test
The following command needs to be run through "sudo":
apt-get install -qq -yy libgmp-dev libmpfr-dev libx11-dev m4 perl pkg-config
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/g/glib2.0/libglib2.0-0_2.56.4-0ubuntu0.18.04.6_amd64.deb 404 Not Found [IP: 91.189.88.142 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/g/glib2.0/libglib2.0-data_2.56.4-0ubuntu0.18.04.6_all.deb 404 Not Found [IP: 91.189.88.142 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/libx/libxml2/libxml2_2.9.4+dfsg1-6.1ubuntu1.3_amd64.deb 404 Not Found [IP: 91.189.88.142 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
OS package installation failed
Cleaning up file based variables
ERROR: Job failed: exit code 1