remove redundant condition in release workflow [skip ci]

Author: mojavelinux

.github/workflows/release.yml

@@ -7,9 +7,7 @@ jobs:
   activate:
     runs-on: ubuntu-latest
     if: |
-      github.repository == 'asciidoctor/asciidoctor-docs-ui' &&
-      !startsWith(github.event.head_commit.message, 'Release ') &&
-      !endsWith(github.event.head_commit.message, ' [skip ci]')
+      github.repository == 'asciidoctor/asciidoctor-docs-ui' && !startsWith(github.event.head_commit.message, 'Release ')
     steps:
     - run: echo ok go
   build: