Remove publish-docsearch-config-extension

Algolia docsearch does the indexing on its side now

antora-playbook.yml

@@ -6,9 +6,6 @@ antora:
   - require: '@springio/antora-extensions/inject-collector-cache-config-extension'
   - '@antora/collector-extension'
   - '@antora/atlas-extension'
-  - require: '@springio/antora-extensions/publish-docsearch-config-extension'
-    index_name: 'spring-security-docs'
-    root_component_name: 'security'
   - require: '@springio/antora-extensions/root-component-extension'
     root_component_name: 'security'
 site: