sunrpc/svc.c: Remove unused line 'rqstp->rq_server = serv;' in svc_process

There is no need to set rqstp->rq_server to serv, while serv is initialized as rqstp->rq_server at previous line. And between these two lines, there is no change to rqstp->rq_server.
Signed-off-by: Nideawu <ideawu@163.com>
Reviewed-by: NTom Tucker <tom@opengridcomputing.com>
Signed-off-by: NJ. Bruce Fields <bfields@citi.umich.edu>

net/sunrpc/svc.c

@@ -1093,7 +1093,6 @@ svc_process(struct svc_rqst *rqstp)
 	procp = versp->vs_proc + proc;
 	if (proc >= versp->vs_nproc || !procp->pc_func)
 		goto err_bad_proc;
-	rqstp->rq_server   = serv;
 	rqstp->rq_procinfo = procp;
 
 	/* Syntactic check complete */