Remove outdated comment

Author: rubiii

.github/workflows/ci.yml

@@ -63,9 +63,6 @@ jobs:
       matrix:
         ruby: ['3.0', 3.1, 3.2, 3.3, 3.4, '4.0', truffleruby, head, truffleruby-head, jruby-9.4.8]
     # Head builds surface upstream regressions early and should not block.
-    # jruby is included provisionally: akami's OpenSSL-based signing and GOST
-    # engine make its jruby support unverified, so it does not block either
-    # until a green run proves it can be promoted to a required build.
     continue-on-error: ${{ matrix.ruby == 'head' || matrix.ruby == 'truffleruby-head' }}
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0