fix(e2e): remove unused vllmServiceName variable

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: clubanderson

test/e2e-openshift/sharegpt_scaleup_test.go

@@ -123,7 +123,6 @@ var _ = Describe("ShareGPT Scale-Up Test", Ordered, func() {
 				hpaMinReplicas       int32
 				hpaName              string
 				vaName               string
-				vllmServiceName      string
 				scaledReplicas       int32
 				scaledOptimized      int32
 				jobCompletionTimeout = 10 * time.Minute