Cleanup: Remove CSV drag-and-drop snapshot query feature (#113645)

* Chore: Remove editPanelCSVDragAndDrop feature

* update i18n

* fix issues from PR

pkg/services/featuremgmt/registry.go

@@ -124,13 +124,6 @@ var (
 			Stage:       FeatureStageExperimental,
 			Owner:       grafanaAlertingSquad,
 		},
-		{
-			Name:         "editPanelCSVDragAndDrop",
-			Description:  "Enables drag and drop for CSV and Excel files",
-			FrontendOnly: true,
-			Stage:        FeatureStageExperimental,
-			Owner:        grafanaDatavizSquad,
-		},
 		{
 			Name:           "logsContextDatasourceUi",
 			Description:    "Allow datasource to provide custom UI for context view",

pkg/services/featuremgmt/toggles_gen.csv

@@ -14,7 +14,6 @@ cloudWatchCrossAccountQuerying,GA,@grafana/aws-datasources,false,false,false
 showDashboardValidationWarnings,experimental,@grafana/dashboards-squad,false,false,false
 mysqlAnsiQuotes,experimental,@grafana/search-and-storage,false,false,false
 alertingBacktesting,experimental,@grafana/alerting-squad,false,false,false
-editPanelCSVDragAndDrop,experimental,@grafana/dataviz-squad,false,false,true
 logsContextDatasourceUi,GA,@grafana/observability-logs,false,false,true
 lokiShardSplitting,experimental,@grafana/observability-logs,false,false,true
 lokiQuerySplitting,GA,@grafana/observability-logs,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -67,10 +67,6 @@ const (
 	// Rule backtesting API for alerting
 	FlagAlertingBacktesting = "alertingBacktesting"
 
-	// FlagEditPanelCSVDragAndDrop
-	// Enables drag and drop for CSV and Excel files
-	FlagEditPanelCSVDragAndDrop = "editPanelCSVDragAndDrop"
-
 	// FlagLogsContextDatasourceUi
 	// Allow datasource to provide custom UI for context view
 	FlagLogsContextDatasourceUi = "logsContextDatasourceUi"

pkg/services/featuremgmt/toggles_gen.json

@@ -1357,6 +1357,7 @@
         "name": "editPanelCSVDragAndDrop",
         "resourceVersion": "1762783224740",
         "creationTimestamp": "2023-01-24T09:43:44Z",
+        "deletionTimestamp": "2025-11-10T16:31:10Z",
         "annotations": {
           "grafana.app/updatedTimestamp": "2025-11-10 14:00:24.740459 +0000 UTC"
         }