Hide pakcage installer system APIs.

Change-Id: If5245ed2be7a3ebb50a7af924be85894314f6f47
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index 2db623b..494b53a 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -1529,7 +1529,6 @@
      *
      * @hide
      */
-    @SystemApi
     @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
     public static final String ACTION_MANAGE_APP_PERMISSIONS =
             "android.intent.action.MANAGE_APP_PERMISSIONS";
@@ -1545,7 +1544,6 @@
      *
      * @hide
      */
-    @SystemApi
     @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
     public static final String ACTION_MANAGE_PERMISSIONS =
             "android.intent.action.MANAGE_PERMISSIONS";
@@ -1554,7 +1552,7 @@
      * Intent extra: An app package name.
      * <p>
      * Type: String
-     * </p>S
+     * </p>
      *
      * @hide
      */
@@ -1575,7 +1573,6 @@
      *
      * @hide
      */
-    @SystemApi
     @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
     public static final String ACTION_MANAGE_PERMISSION_APPS =
             "android.intent.action.MANAGE_PERMISSION_APPS";