Sidecar: Remove experimental Sidecar implementation (#103786)

* Sidecar: remove `appSidecar` feature toggle

* Sidecar: Remove sidecar implementation

* lint

pkg/services/featuremgmt/registry.go

@@ -1244,12 +1244,6 @@ var (
 			HideFromDocs:      true,
 			HideFromAdminPage: true,
 		},
-		{
-			Name:        "appSidecar",
-			Description: "Enable the app sidecar feature that allows rendering 2 apps at the same time",
-			Stage:       FeatureStageExperimental,
-			Owner:       grafanaFrontendPlatformSquad,
-		},
 		{
 			Name:         "groupAttributeSync",
 			Description:  "Enable the groupsync extension for managing Group Attribute Sync feature",

pkg/services/featuremgmt/toggles-gitlog.csv

@@ -355,7 +355,6 @@ exploreLogsLimitedTimeRange,2024-08-29T13:55:59Z,,15a4ff992bd925f5714bc4e73fa976
 exploreLogsShardSplitting,2024-08-29T13:55:59Z,,15a4ff992bd925f5714bc4e73fa9766a995b5711,Sven Grossmann
 newFiltersUI,2024-08-30T12:48:13Z,,00ae49a61adff11e5fbac3341941b35185d9e8d9,Sergej-Vlasov
 appPlatformAccessTokens,2024-09-05T16:18:44Z,2024-10-14T10:47:18Z,d5ebaa0ef92edecfb9511dc7c8080be25f8cc7e7,Claudiu Dragalina-Paraipan
-appSidecar,2024-09-09T12:45:05Z,,5e2ac24890906e5070323d87730dd78a4f885963,Andrej Ocenas
 vizActions,2024-09-09T14:11:55Z,,af48d3db1eb2d8681843f5997e50fea5e5ea3096,Adela Almasan
 groupAttributeSync,2024-09-09T15:29:43Z,,6ded6a8872204a818b3795dc733cc5fe5db066a0,Aaron Godin
 alertingFilterV2,2024-09-11T11:29:26Z,,90ee52e8d9c14237f8a57b622c0def7512e657cd,Gilles De Mey

pkg/services/featuremgmt/toggles_gen.csv

@@ -161,7 +161,6 @@ exploreLogsAggregatedMetrics,experimental,@grafana/observability-logs,false,fals
 exploreLogsLimitedTimeRange,experimental,@grafana/observability-logs,false,false,true
 homeSetupGuide,experimental,@grafana/growth-and-onboarding,false,false,true
 appPlatformGrpcClientAuth,experimental,@grafana/identity-access-team,false,false,false
-appSidecar,experimental,@grafana/grafana-frontend-platform,false,false,false
 groupAttributeSync,privatePreview,@grafana/identity-access-team,false,false,false
 alertingQueryAndExpressionsStepMode,GA,@grafana/alerting-squad,false,false,true
 improvedExternalSessionHandling,preview,@grafana/identity-access-team,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -655,10 +655,6 @@ const (
 	// Enables the gRPC client to authenticate with the App Platform by using ID & access tokens
 	FlagAppPlatformGrpcClientAuth = "appPlatformGrpcClientAuth"
 
-	// FlagAppSidecar
-	// Enable the app sidecar feature that allows rendering 2 apps at the same time
-	FlagAppSidecar = "appSidecar"
-
 	// FlagGroupAttributeSync
 	// Enable the groupsync extension for managing Group Attribute Sync feature
 	FlagGroupAttributeSync = "groupAttributeSync"

pkg/services/featuremgmt/toggles_gen.json

@@ -479,18 +479,6 @@
         "hideFromDocs": true
       }
     },
-    {
-      "metadata": {
-        "name": "appSidecar",
-        "resourceVersion": "1743693517832",
-        "creationTimestamp": "2024-09-09T12:45:05Z"
-      },
-      "spec": {
-        "description": "Enable the app sidecar feature that allows rendering 2 apps at the same time",
-        "stage": "experimental",
-        "codeowner": "@grafana/grafana-frontend-platform"
-      }
-    },
     {
       "metadata": {
         "name": "assetSriChecks",