ConnectivityManager: unhide methods with Handler argument

Test: no functionality change
Bug: 32130437
Change-Id: I2a57175142683f991a215b584282db143a76ed9d
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 11d247b..e163365 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -2956,7 +2956,6 @@
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
      * @throws IllegalArgumentException if {@code request} specifies any mutable
      *         {@code NetworkCapabilities}.
-     * @hide
      */
     public void requestNetwork(
             NetworkRequest request, NetworkCallback networkCallback, Handler handler) {
@@ -3073,8 +3072,6 @@
      * @param networkCallback The {@link NetworkCallback} to be utilized for this request. Note
      *                        the callback must not be shared - it uniquely specifies this request.
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
-     *
-     * @hide
      */
     public void requestNetwork(NetworkRequest request, int timeoutMs,
             NetworkCallback networkCallback, Handler handler) {
@@ -3214,7 +3211,6 @@
      * @param networkCallback The {@link NetworkCallback} that the system will call as suitable
      *                        networks change state.
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
-     * @hide
      */
     public void registerNetworkCallback(
             NetworkRequest request, NetworkCallback networkCallback, Handler handler) {
@@ -3288,7 +3284,6 @@
      * @param networkCallback The {@link NetworkCallback} that the system will call as the
      *                        system default network changes.
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
-     * @hide
      */
     public void registerDefaultNetworkCallback(NetworkCallback networkCallback, Handler handler) {
         // This works because if the NetworkCapabilities are null,