tulip: Remove deadcode on startup true condition

The true check on the variable startable in the ternary operator
is always false because the previous if statement handles the true
condition for startable. Hence the ternary check is dead code and
can be removed.

Addresses-Coverity: ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>