[build] Remove noise from jruby-launcher installs

(cherry picked from commit b0c2aff)

Author: chadlwilson

.github/workflows/maven.yml

@@ -92,6 +92,9 @@ jobs:
           bundler-cache: 'false' # Need to install later so we can vary from Gemfile.lock as required for JRuby version compatibility
           bundler: ${{ startsWith(matrix.jruby_version, '9.3') && '2.3.27' || 'Gemfile.lock' }}
 
+      - name: Remove jruby-launcher # Coming from setup-ruby/ruby-build and causes annoying warnings
+        run: gem uninstall -a jruby-launcher
+
       - name: Run appraisal for ${{ matrix.appraisal }}
         run: bundle install && bundle exec rake spec