SONAR-6717 Mark org.sonar.api.issue.action.Action as deprecated

sonar-plugin-api/src/main/java/org/sonar/api/issue/action/Action.java

  */
 package org.sonar.api.issue.action;
 
-import com.google.common.annotations.Beta;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Strings;
 import com.google.common.collect.ImmutableList;
+import java.util.List;
 import org.sonar.api.issue.Issue;
 import org.sonar.api.issue.condition.Condition;
 
-import java.util.List;
-
 import static com.google.common.collect.Lists.newArrayList;
 
 /**
  * @since 3.6
+ * @deprecated in 5.2. Webapp can not be customized anymore to define actions on issues.
  */
-@Beta
+@Deprecated
 public class Action {
 
   private final String key;

sonar-plugin-api/src/main/java/org/sonar/api/issue/action/Actions.java

  */
 package org.sonar.api.issue.action;
 
-import com.google.common.annotations.Beta;
-import org.sonar.api.ExtensionPoint;
-import org.sonar.api.server.ServerSide;
-
 import java.util.ArrayList;
 import java.util.List;
+import org.sonar.api.server.ServerSide;
 
 /**
  * @since 3.6
+ * @deprecated in 5.2. Webapp can not be customized anymore to define actions on issues.
  */
-@Beta
+@Deprecated
 @ServerSide
-@ExtensionPoint
 public class Actions {
 
   private final List<Action> actions = new ArrayList<>();
     return actions;
   }
 
-
 }