Remove point-to-point assertion in IpSecManagerTunnelTest

This change removes the requirement for IPsec interfaces to be
point-to-point. The two implementations (VTI vs XFRMI) have different
point-to-point values, and as such, this assertion is no longer valid.

Bug: 126578549
Test: Ran tests against XFRM-I kernels
Change-Id: I0597e0aa86ccea2cd28d7c5e02063c788ddb08b8

tests/cts/net/src/android/net/cts/IpSecManagerTunnelTest.java

@@ -127,7 +127,6 @@ public class IpSecManagerTunnelTest extends IpSecBaseTest {
 
             // Check interface was created
             NetworkInterface netIntf = NetworkInterface.getByName(tunnelIntf.getInterfaceName());
-            assertTrue(netIntf.isPointToPoint());
             assertNotNull(netIntf);
 
             // Add addresses and check