Re-enable the tests for background restrictions

The feature is now turned on so the tests can be re-enabled.
This reverts commit 6266342327611f70bea43730e2fcaf9e7536a98b.

Test: atest CtsHostsideNetworkTests

Bug: 304347838
Change-Id: I85f462e75931240bde8b0dd956c0011ec8435b8f
1 file changed