settings: Remove @hide NFC API usage

These @hide usages in other parts of platform need to be cleaned
up to unbundle NFC mainline module.

Flag: None (The NFC flag - `enableNfcMainline` has been promoted to trunkfood. Note these APIs are available as @hide even if not available in formal SDK until V)
Bug: 307352220
Test: Compiles

Change-Id: I6f87ad7ae03c67aaa2ddb0ac2529debc53278ba8

Android.bp

@@ -75,7 +75,6 @@ android_library {
         "android.hardware.dumpstate-V1-java",
         "android.hardware.dumpstate-V1.0-java",
         "android.hardware.dumpstate-V1.1-java",
-        "android.nfc.flags-aconfig-java",
         "android.view.accessibility.flags-aconfig-java",
         "com_android_server_accessibility_flags_lib",
         "net-utils-framework-common",