Revert "[Contextual Edu] Check if device is connected before incrementing signal count"

This reverts commit 152e5b5ffa6f7e8e11d1c548cc0c611daf345b75.

Reason for revert: The test is flaky, would like to fix the flakiness before resubmit

Change-Id: I2a4058bf89e80cd3c3ac03d4720725ed8a880458
4 files changed