NetworkCapabilities: Hide copy constructor

Only used by connectivity service, no need to mark it public.

Bug: 184537591
Test: Compiles
Change-Id: Ie0d515d73e30a4e15141a3d92aa739192badeb13
diff --git a/framework/api/module-lib-current.txt b/framework/api/module-lib-current.txt
index cd96a1b..82d5d6e 100644
--- a/framework/api/module-lib-current.txt
+++ b/framework/api/module-lib-current.txt
@@ -104,7 +104,6 @@
   }
 
   public final class NetworkCapabilities implements android.os.Parcelable {
-    ctor public NetworkCapabilities(@Nullable android.net.NetworkCapabilities, long);
     method @Nullable public java.util.Set<android.util.Range<java.lang.Integer>> getUids();
     method public boolean hasUnwantedCapability(int);
     field public static final long REDACT_ALL = -1L; // 0xffffffffffffffffL
diff --git a/framework/src/android/net/NetworkCapabilities.java b/framework/src/android/net/NetworkCapabilities.java
index d39f4fb..0619bbd 100644
--- a/framework/src/android/net/NetworkCapabilities.java
+++ b/framework/src/android/net/NetworkCapabilities.java
@@ -163,7 +163,6 @@
      *                   {@link NetworkCapabilities}.
      * @hide
      */
-    @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
     public NetworkCapabilities(@Nullable NetworkCapabilities nc, @RedactionType long redactions) {
         mRedactions = redactions;
         if (nc != null) {