selftests: mptcp: connect: remote time in TAP output

It is now added by the MPTCP lib automatically, see the parent commit.

The time in the TAP output might be slightly different from the one
displayed before, but that's OK.
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20240906-net-next-mptcp-ksft-subtest-time-v2-2-31d5ee4f3bdf@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/net/mptcp/mptcp_connect.sh

@@ -431,7 +431,6 @@ do_transfer()
 
 	local duration
 	duration=$((stop-start))
-	result_msg+=" # time=${duration}ms"
 	printf "(duration %05sms) " "${duration}"
 	if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
 		mptcp_lib_pr_fail "client exit code $retc, server $rets"