CI: revert kernel addr randomization introduced in 3a0fc864

It has been resolved on image generation side:
https://github.com/actions/runner-images/issues/9491

It is no harm to keep it on our side as well, but we can drop it.

(cherry picked from commit b5dd8b466e9afe0cfa712efddf83a3e239b59eee)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 4103fed69fdbd09758e8a43a06af9389bb18c5d6)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 12417d207dfa5084bcbc2c5c67c76b4c9932027d)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 3806dc648633066944e2241e3f86198194a20e4e)
Signed-off-by: Amaury Denoyelle <adenoyelle@haproxy.com>
diff --git a/.github/workflows/vtest.yml b/.github/workflows/vtest.yml
index e9490b2..9abfa96 100644
--- a/.github/workflows/vtest.yml
+++ b/.github/workflows/vtest.yml
@@ -52,17 +52,6 @@
       run: |
         echo "key=$(echo ${{ matrix.name }} | sha256sum | awk '{print $1}')" >> $GITHUB_OUTPUT
 
-
-#
-# temporary hack
-# should be revisited after https://github.com/actions/runner-images/issues/9491 is resolved
-#
-
-    - name: Setup enthropy
-      if: ${{ startsWith(matrix.os, 'ubuntu-') }}
-      run: |
-        sudo sysctl vm.mmap_rnd_bits=28
-
     - name: Cache SSL libs
       if: ${{ matrix.ssl && matrix.ssl != 'stock' && matrix.ssl != 'BORINGSSL=yes' && matrix.ssl != 'QUICTLS=yes' }}
       id: cache_ssl