Revert "Implement NetworkRequestsState atom"

This reverts commit e3245081b128398eb4802855717b05749a742b9b.

Reason for revert: The change is unsafe as it introduces code with writings to a separate thread whose message queue size is unlimited.
Test: atest FrameworksNetTests

Change-Id: I392a30f77cfbcd17f420e29f0944604fd789b10a
7 files changed