Remove TRANSPORT_USB in NetworkCapabilitiesUtils

The constant can now be used from the SDK, and will be inlined at
compile time.

This reverts commit 4c087c18114ec0026b5cdf4824b34477cd8f77c2.

Bug: 184158327
Test: m
Change-Id: Ie577677d237ccfbc73fd3924e6a6d32f9f655851
diff --git a/staticlibs/framework/com/android/net/module/util/NetworkCapabilitiesUtils.java b/staticlibs/framework/com/android/net/module/util/NetworkCapabilitiesUtils.java
index d4b1c9e..903214e 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkCapabilitiesUtils.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkCapabilitiesUtils.java
@@ -33,6 +33,7 @@
 import static android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH;
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_ETHERNET;
+import static android.net.NetworkCapabilities.TRANSPORT_USB;
 import static android.net.NetworkCapabilities.TRANSPORT_VPN;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI_AWARE;
@@ -47,12 +48,6 @@
  * @hide
  */
 public final class NetworkCapabilitiesUtils {
-    /**
-     * See android.net.NetworkCapabilities.TRANSPORT_USB
-     * TODO: Use API constant when all downstream branches are S-based
-     */
-    public static final int TRANSPORT_USB = 8;
-
     // Transports considered to classify networks in UI, in order of which transport should be
     // surfaced when there are multiple transports. Transports not in this list do not have
     // an ordering preference (in practice they will have a deterministic order based on the