Remove not needed clang-format off comments

Can be reviewed with --word-diff-regex=. --ignore-all-space

src/rpc/mempool.cpp

@@ -672,8 +672,6 @@ static RPCHelpMan savemempool()
 void RegisterMempoolRPCCommands(CRPCTable& t)
 {
     static const CRPCCommand commands[]{
-        // category     actor (function)
-        // --------     ----------------
         {"rawtransactions", &sendrawtransaction},
         {"rawtransactions", &testmempoolaccept},
         {"blockchain", &getmempoolancestors},