Remove fix for CentOS 7 from TCP_Flags.h

src/analyzer/protocol/tcp/TCP_Flags.h

@@ -2,15 +2,9 @@
 
 #pragma once
 
-// This needs to remain the first include in this file, or some defines aren't
-// set correctly when netinet/tcp.h is included and the CentOS 7 build breaks.
-// clang-format off
-#include "zeek/net_util.h"
-
 #include <netinet/tcp.h>
 #include <sys/types.h>
 #include <string>
-// clang-format on
 
 namespace zeek::analyzer::tcp {