remove mentions to --with-plugins-docker-image (#22059)

Author: Tofel

core/scripts/cre/environment/completions.go

@@ -244,7 +244,6 @@ func buildCommandTree() *CompletionNode {
 			{Text: "--extra-allowed-gateway-ports", Description: "Extra allowed ports for outgoing connections from the Gateway Connector (e.g. 8080,8081)"},
 			{Text: "--with-example", Description: "Deploys and registers example workflow (default: false)"},
 			{Text: "--example-workflow-timeout", Description: "Time to wait until example workflow succeeds (e.g. 10s, 1m, 1h) (default: 5m)"},
-			{Text: "--with-plugins-docker-image", Description: "Docker image to use (must have all capabilities included)"},
 			{Text: "--with-beholder", Description: "Deploys Beholder (Chip Ingress + Red Panda) (default: false)"},
 			{Text: "--with-dashboards", Description: "Deploys Observability Stack and Grafana Dashboards (default: false)"},
 			{Text: "--with-billing", Description: "Deploys Billing Platform Service (default: false)"},

core/scripts/cre/environment/environment/setup.go

@@ -645,7 +645,6 @@ func RunSetup(ctx context.Context, config SetupConfig, noPrompt, purge, withBill
 	logger.Info().Msg("1. Navigate to the CRE environment directory: cd core/scripts/cre/environment")
 	logger.Info().Msg("2. Start the environment: go run . env start")
 	logger.Info().Msg("   Optional: Add --with-example to start with an example workflow")
-	logger.Info().Msg("   Optional: Add --with-plugins-docker-image to use a pre-built image with capabilities")
 	logger.Info().Msg("   Optional: Add --with-beholder to start the Beholder")
 	logger.Info().Msg("\nFor more information, see the documentation in core/scripts/cre/environment/README.md")