doc: remove mention of -rpctimeout from man page

That option hasn't existed for a long time.

Author: laanwj

contrib/debian/manpages/bitcoin.conf.5

@@ -37,9 +37,6 @@ You must set *rpcuser* to secure the JSON-RPC api.
 \fBrpcpassword=\fR\fI'password'\fR
 You must set *rpcpassword* to secure the JSON-RPC api.
 .TP
-\fBrpctimeout=\fR\fI'30'\fR
-How many seconds *bitcoin* will wait for a complete RPC HTTP request, after the HTTP connection is established.
-.TP
 \fBrpcallowip=\fR\fI'192.168.1.*'\fR
 By default, only RPC connections from localhost are allowed. Specify as many *rpcallowip=* settings as you like to allow connections from other hosts (and you may use * as a wildcard character).
 .TP