Merge pull request #52485 from flix-tech/sig-test-45947-remove-flag

Automatic merge from submit-queue (batch tested with PRs 52485, 52443, 52597, 52450, 51971). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>..

Removing PrometheusPushGateway --prom-push-gateway flag from e2e tests.

**What this PR does / why we need it**: Removing obsolete PrometheusPushGateway --prom-push-gateway flag from e2e tests.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #45947

**Special notes for your reviewer**:

**Release note**:

```release-note
Removing `--prom-push-gateway` flag from e2e tests
```

test/e2e/framework/test_context.go

@@ -59,7 +59,6 @@ type TestContextType struct {
 	EtcdUpgradeVersion       string
 	UpgradeImage             string
 	GCEUpgradeScript         string
-	PrometheusPushGateway    string
 	ContainerRuntime         string
 	ContainerRuntimeEndpoint string
 	ImageServiceEndpoint     string
@@ -254,7 +253,6 @@ func RegisterClusterFlags() {
 	flag.StringVar(&TestContext.UpgradeImage, "upgrade-image", "", "Image to upgrade to (e.g. 'container_vm' or 'gci') if doing an upgrade test.")
 	flag.StringVar(&TestContext.GCEUpgradeScript, "gce-upgrade-script", "", "Script to use to upgrade a GCE cluster.")
 	flag.StringVar(&TestContext.FederationUpgradeTarget, "federation-upgrade-target", "ci/latest", "Version to upgrade to (e.g. 'release/stable', 'release/latest', 'ci/latest', '0.19.1', '0.19.1-669-gabac8c8') if doing an federation upgrade test.")
-	flag.StringVar(&TestContext.PrometheusPushGateway, "prom-push-gateway", "", "The URL to prometheus gateway, so that metrics can be pushed during e2es and scraped by prometheus. Typically something like 127.0.0.1:9091.")
 	flag.BoolVar(&TestContext.CleanStart, "clean-start", false, "If true, purge all namespaces except default and system before running tests. This serves to Cleanup test namespaces from failed/interrupted e2e runs in a long-lived cluster.")
 	flag.BoolVar(&TestContext.GarbageCollectorEnabled, "garbage-collector-enabled", true, "Set to true if the garbage collector is enabled in the kube-apiserver and kube-controller-manager, then some tests will rely on the garbage collector to delete dependent resources.")
 }