man: remove non-existent -x argument from tcpconnect man page
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.

iovisor/bcc,tuxology/bcc,brendangregg/bcc,tuxology/bcc,tuxology/bcc,brendangregg/bcc,iovisor/bcc,brendangregg/bcc,tuxology/bcc,brendangregg/bcc,iovisor/bcc,tuxology/bcc,brendangregg/bcc,iovisor/bcc,iovisor/bcc