Revert "CI: setup kernel entropy to work with asan"

This reverts commit cb2fd0abb2 from #1019.

.github/workflows/linux.yml

@@ -57,15 +57,6 @@ jobs:
       - name: "Checkout repository"
         uses: actions/checkout@v4
 
-#
-# temporary hack
-# should be revisited after https://github.com/actions/runner-images/issues/9491 is resolved
-#
-
-      - name: Setup entropy
-        run: |
-          sudo sysctl vm.mmap_rnd_bits=28
-
       - name: "Run tests"
         run: ./scripts/test
         env: