Remove Ikev2VpnProfile related shims usage

Ikev2VpnProfile related shims are no longer needed since
downstream branch was moved to udc branch. This commit
also update the methods that are used to do the SDK check
because of the removal of shims.

Test: atest CtsNetTestCases
Change-Id: I4efe65f87ace02b1f1649bf15ccf0ba06fd90486
1 file changed