Removed ContrailFlows* Prometheus alerts

As recently discussed, we should consider removal of all ContrailFlows*
alerts as these are non-value ones, and can provide lots of false
positive alerts.

Change-Id: I93974d0bbc4aa02038d8eb9d303adddade5de4ef
Closes-Bug: PROD-27474
(cherry picked from commit 90c87bda07a8c07b2b2fe26b4fa66804837cd4d2)
2 files changed