Remove reflection from network logging test

The network logging API has been made public. Call it directly instead
of using reflection.

Bug: 33068581
Test: cts-tradefed run cts-dev --module CtsDevicePolicyManagerTestCases \
    --test com.android.cts.devicepolicy.DeviceOwnerTest\
        #testAdminActionBookkeeping

Change-Id: I53df6ef3ec06691ea14f78198570bd31df730d17
(cherry picked from commit 886a72b68f8445e165fc886d900b10ca0b272607)
1 file changed