Remove register_nsd_offload_engine flag from module flags.aconfig

register_nsd_offload_engine is moved to platform flags.aconfig since
this flag is used from platform and not used from module

Bug: 325591785
Test: TH
Merged-In: If8a8426dbbb10253fd5046f639de13519396ddac
Change-Id: If8a8426dbbb10253fd5046f639de13519396ddac
diff --git a/common/flags.aconfig b/common/flags.aconfig
index 8c448e6..19b522c 100644
--- a/common/flags.aconfig
+++ b/common/flags.aconfig
@@ -26,13 +26,6 @@
 }
 
 flag {
-  name: "register_nsd_offload_engine"
-  namespace: "android_core_networking"
-  description: "The flag controls the access for registerOffloadEngine API in NsdManager"
-  bug: "294777050"
-}
-
-flag {
   name: "ipsec_transform_state"
   namespace: "android_core_networking_ipsec"
   description: "The flag controls the access for getIpSecTransformState and IpSecTransformState"