Remove NFC HCE Latency Flag from non-updatable flags.aconfig

We previously added the nfc_hce_latency_events flag to this file, but we should use the flags in `packages/modules/Nfc/flags` instead, which will be used for Android 16+ targeting features.

Bug: 393398058 
Change-Id: Iec27a49bf5ab829d8dc9d26fd0f6b573d370c181
Test: Compiles
Flag: com.android.nfc.module.flags.nfc_hce_latency_event
diff --git a/nfc-non-updatable/flags/flags.aconfig b/nfc-non-updatable/flags/flags.aconfig
index 54ded0c..eb30bbe 100644
--- a/nfc-non-updatable/flags/flags.aconfig
+++ b/nfc-non-updatable/flags/flags.aconfig
@@ -198,10 +198,6 @@
     bug: "380892385"
 }
 
-flag {
-    name: "nfc_hce_latency_events"
-    is_exported: true
-    namespace: "wallet_integration"
-    description: "Enables tracking latency for HCE"
-    bug: "379849603"
-}
+# Unless you are adding a flag for a file under nfc-non-updatable, you should
+# not add a flag here for Android 16+ targeting features. Use the flags
+# in com.android.nfc.module.flags (packages/modules/Nfc/flags) instead.