man: remove non-existent -x argument from tcpconnect man page
There's no -x option in tcpconnect. I don't know how it get into the
man page sysnopsis, but it doesn't belong there.
.SH NAME
tcpconnect \- Trace TCP active connections (connect()). Uses Linux eBPF/bcc.
.SH SYNOPSIS
-.B tcpconnect [\-h] [\-c] [\-t] [\-x] [\-p PID] [-P PORT] [\-\-cgroupmap MAPPATH] [\-\-mntnsmap MAPPATH]
+.B tcpconnect [\-h] [\-c] [\-t] [\-p PID] [-P PORT] [\-\-cgroupmap MAPPATH] [\-\-mntnsmap MAPPATH]
.SH DESCRIPTION
This tool traces active TCP connections (eg, via a connect() syscall;
accept() are passive connections). This can be useful for general
