Drop the event emission on every reconcile

[vaikas]

Addresses #knative/pkg#1520

Do not emit events for every reconcile. Add logging

Proposed Changes

• Do not emit normal events for every reconcile
• Add logging

Release Note

- 🗑️ Remove feature or internal logic

Do not emit k8s events for every successful reconcile of IMC

Docs

[slinkydeveloper]

/assign

[vaikas]

/hold
need to remove couple of files.

[vaikas]

/hold cancel

[knative-metrics-robot]

The following is the coverage report on the affected files.
Say /test pull-knative-eventing-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/reconciler/inmemorychannel/controller/inmemorychannel.go	75.5%	76.4%	0.8

[slinkydeveloper]

/lgtm
/approve

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: slinkydeveloper, vaikas

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• OWNERS [slinkydeveloper,vaikas]

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[knative-test-reporter-robot]

The following jobs failed:

Test name	Triggers	Retries
pull-knative-eventing-integration-tests		0/3

Failed non-flaky tests preventing automatic retry of pull-knative-eventing-integration-tests:

test/conformance.TestChannelDataPlaneSuccess/InMemoryChannel-messaging.knative.dev/v1
test/conformance.TestChannelDataPlaneSuccess/InMemoryChannel-messaging.knative.dev/v1/full-event_encoding_binary_version_0.3

[pierDipi]

Failed to create "InMemoryChannel" "full-event-binary-03-ch": conversion webhook for messaging.knative.dev/v1, Kind=InMemoryChannel failed: Post https://eventing-webhook.knative-eventing-l6byfp58r8.svc:443/resource-conversion?timeout=30s: EOF

/retest
/lgtm