Minor fixes of @deprecated comments

sonar-check-api/src/main/java/org/sonar/check/Priority.java

@@ -19,11 +19,6 @@
  */
 package org.sonar.check;
 
-/**
- * @deprecated since 4.2
- * @see org.sonar.api.rule.Severity
- */
-@Deprecated
 public enum Priority {
   /**
    * WARNING : DO NOT CHANGE THE ENUMERATION ORDER

sonar-plugin-api/src/main/java/org/sonar/api/rules/RulePriority.java

@@ -25,6 +25,7 @@ import org.sonar.check.Priority;
  * @deprecated since 4.2
  * @see org.sonar.api.rule.Severity
  */
+@Deprecated
 public enum RulePriority {
 
   /**