[core] remove unused member con->in_joblist

src/base.h

@@ -413,8 +413,6 @@ typedef struct connection {
 	/* response */
 	int    got_response;
 
-	int    in_joblist;
-
 	connection_type mode;
 
 	void **plugin_ctx;           /* plugin connection specific config */

src/joblist.c

@@ -8,8 +8,6 @@
 #include <string.h>
 
 int joblist_append(server *srv, connection *con) {
-	if (con->in_joblist) return 0;
-
 	if (srv->joblist->size == 0) {
 		srv->joblist->size  = 16;
 		srv->joblist->ptr   = malloc(sizeof(*srv->joblist->ptr) * srv->joblist->size);

src/server.c

@@ -1812,7 +1812,6 @@ static int server_main (server * const srv, int argc, char **argv) {
 		for (ndx = 0; ndx < srv->joblist->used; ndx++) {
 			connection *con = srv->joblist->ptr[ndx];
 			connection_state_machine(srv, con);
-			con->in_joblist = 0;
 		}
 
 		srv->joblist->used = 0;