diff --git a/maven-core/src/main/java/org/apache/maven/lifecycle/mapping/Lifecycle.java b/maven-core/src/main/java/org/apache/maven/lifecycle/mapping/Lifecycle.java
index 27f612f3ce..72a9c095f2 100644
--- a/maven-core/src/main/java/org/apache/maven/lifecycle/mapping/Lifecycle.java
+++ b/maven-core/src/main/java/org/apache/maven/lifecycle/mapping/Lifecycle.java
@@ -21,7 +21,6 @@ package org.apache.maven.lifecycle.mapping;
 
 import java.util.Collections;
 import java.util.LinkedHashMap;
-import java.util.List;
 import java.util.Map;
 
 
@@ -40,13 +39,6 @@ public class Lifecycle
      */
     private Map<String, LifecyclePhase> lifecyclePhases;
 
-    /*
-     * NOTE: This exists merely for backward-compat with legacy-style lifecycle definitions and allows configuration
-     * injection to work instead of failing.
-     */
-    @SuppressWarnings( "unused" )
-    private List<String> optionalMojos;
-
     /**
      * Method getId
      */
diff --git a/maven-core/src/test/resources/META-INF/plexus/components.xml b/maven-core/src/test/resources/META-INF/plexus/components.xml
index 714cb36b4d..6aa5a0616f 100644
--- a/maven-core/src/test/resources/META-INF/plexus/components.xml
+++ b/maven-core/src/test/resources/META-INF/plexus/components.xml
@@ -76,9 +76,6 @@
               <install>org.apache.maven.plugins:maven-install-plugin:install</install>
               <deploy>org.apache.maven.plugins:maven-deploy-plugin:deploy</deploy>
             </phases>
-            <optional-mojos>
-              <optional-mojo>org.apache.maven.plugins:maven-site-plugin:attach-descriptor</optional-mojo>
-            </optional-mojos>
             <!-- END SNIPPET: pom-lifecycle -->
           </lifecycle>
         </lifecycles>
@@ -101,13 +98,10 @@
               <install>org.apache.maven.plugins:maven-install-plugin:install</install>
               <deploy>org.apache.maven.plugins:maven-deploy-plugin:deploy</deploy>
             </phases>
-            <optional-mojos>
-              <optional-mojo>org.apache.maven.plugins:maven-site-plugin:attach-descriptor</optional-mojo>
-            </optional-mojos>
             <!-- END SNIPPET: pom-lifecycle -->
           </lifecycle>
         </lifecycles>
       </configuration>
     </component>
   </components>
-</component-set>
\ No newline at end of file
+</component-set>