tests: Remove accidental debug echo.

Remove what seems to be an accidental test debug echo command.

Fixes: ab7b0eb ("Add connectivity test for 2 controllers on the same host")
Signed-off-by: Dumitru Ceara <dceara@redhat.com>
Reviewed-By: Ihar Hrachyshka <ihar@redhat.com>
(cherry picked from commit e0b842d)

tests/ovn-macros.at

@@ -371,7 +371,6 @@ start_virtual_controller() {
         -- set bridge $int_bridge fail-mode=secure other-config:disable-in-band=true \
         || return 1
 
-    echo IHAR ${cli_args}
     ovn-controller --enable-dummy-vif-plug ${cli_args} -vconsole:off --detach --no-chdir
 }