CLOUDSTACK-4335: Delete test_deployVmSharedNetworkWithoutIpRange

test_deployVmSharedNetworkWithoutIpRange creates a shared network
without start and end ip. This is no longer permitted and creation
of shared network will fail with error "insufficient capacity". So
remove this test which is invalid.

Signed-off-by: Girish Shilamkar <girish@clogeny.com>