debian: Do not call obsolete command "ovs-ofctl status" in ovs-bugtool.

This command was removed in commit 9b45d7f5d (ofproto: Get rid of archaic
"switch status" OpenFlow extension) but I didn't notice that ovs-bugtool
uses that command and forgot to remove it at the time.

Bug #5360.
Reported-by: Michael Mao <mmao@nicira.com>
Reported-by: Keith Amidon <keith@nicira.com>