[Docs][flyteagent] Remove `agent-service` config in flyte agent documentation #4578

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	4m 43s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	3m 56s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 30s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	3m 58s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	22s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 7s
Test Getting started	3m 41s
Dry Run Goreleaser	7m 32s
Check Go Generate (datacatalog) / Go Generate	1m 22s
Check Go Generate (flytecopilot) / Go Generate	1m 15s
Check Go Generate (flyteadmin) / Go Generate	1m 54s
Check Go Generate (flytectl) / Go Generate	1m 52s
Check Go Generate (flytepropeller) / Go Generate	2m 1s
Unit Tests (datacatalog) / Run Unit Test	2m 44s
Unit Tests (flyteadmin) / Run Unit Test	4m 13s
Unit Tests (flytecopilot) / Run Unit Test	2m 42s
Unit Tests (flytectl) / Run Unit Test	3m 20s
Unit Tests (flyteplugins) / Run Unit Test	3m 41s
Unit Tests (flytepropeller) / Run Unit Test	4m 3s
Unit Tests (flytestdlib) / Run Unit Test	3m 29s
Lint (flyteadmin) / Run Lint	2m 49s
Lint (flytectl) / Run Lint	2m 25s
Lint (datacatalog) / Run Lint	2m 13s
Lint (flyteidl) / Run Lint	1m 42s
Lint (flyteplugins) / Run Lint	2m 47s
Lint (flytepropeller) / Run Lint	2m 58s
Lint (flytestdlib) / Run Lint	2m 36s
Integration Test (flyteadmin) / Integration tests	6m 9s
	1h 31m 5s

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