refactor: drop dependency net on coinjoin/coinjoin by removing unused header

Author: knst

src/net.cpp

@@ -41,7 +41,6 @@
 
 #include <masternode/meta.h>
 #include <masternode/sync.h>
-#include <coinjoin/coinjoin.h>
 #include <evo/deterministicmns.h>
 
 #include <stats/client.h>

test/lint/lint-circular-dependencies.py

@@ -27,7 +27,6 @@
     "banman -> common/bloom -> evo/assetlocktx -> llmq/signing -> net_processing -> banman",
     "coinjoin/client -> net_processing -> coinjoin/client",
     "coinjoin/client -> net_processing -> coinjoin/context -> coinjoin/client",
-    "coinjoin/coinjoin -> llmq/chainlocks -> net -> coinjoin/coinjoin",
     "coinjoin/context -> coinjoin/server -> net_processing -> coinjoin/context",
     "coinjoin/server -> net_processing -> coinjoin/server",
     "common/bloom -> evo/assetlocktx -> llmq/quorums -> net -> common/bloom",