Unhide @Repeatable

Bug: 26623636
(cherry-picked from commit c98d6a4c19ab9d5620c05b0f5ccb3b91a9eaba15)

Change-Id: I6378d5780def3a26d340f213973a4094e97426f5
diff --git a/api/current.txt b/api/current.txt
index 5960119..059eaf8 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -49364,6 +49364,9 @@
   public abstract class Inherited implements java.lang.annotation.Annotation {
   }
 
+  public abstract class Repeatable implements java.lang.annotation.Annotation {
+  }
+
   public abstract class Retention implements java.lang.annotation.Annotation {
   }
 
diff --git a/api/system-current.txt b/api/system-current.txt
index 8ffd512..5608e07 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -51982,6 +51982,9 @@
   public abstract class Inherited implements java.lang.annotation.Annotation {
   }
 
+  public abstract class Repeatable implements java.lang.annotation.Annotation {
+  }
+
   public abstract class Retention implements java.lang.annotation.Annotation {
   }