Revert "UpstreamNetworkMonitor: add NOTIFY_TEST_NETWORK_AVAILABLE"

This reverts commit 82e7733909822b220972a139b597e87b012fa452.

Reason for revert: don't modify production code for testing only

Change-Id: I19826c3308774ce6f62a2748b4e038500aec33e2
4 files changed