clatd: remove spurious MTU_DELTA define am: e4aa7b0879

Original change: https://android-review.googlesource.com/c/platform/external/android-clat/+/2490815

Change-Id: Ibb3fff42aed4f05a72e0bfb2d4a6b654e94dfe90
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/clatd.c b/clatd.c
index e10bda1..21ec0d7 100644
--- a/clatd.c
+++ b/clatd.c
@@ -50,9 +50,6 @@
 
 struct clat_config Global_Clatd_Config;
 
-/* 40 bytes IPv6 header - 20 bytes IPv4 header + 8 bytes fragment header */
-#define MTU_DELTA 28
-
 volatile sig_atomic_t running = 1;
 
 int ipv6_address_changed(const char *interface) {