MM-53688 Remove boards dataretention (#24231)

* remove boards data-retention

* remove another variable

* update snapshots, to remove boards

* need to keep config settings until focalboard is updated

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Co-authored-by: Mattermost Build <build@mattermost.com>

server/platform/services/telemetry/telemetry.go

@@ -829,10 +829,8 @@ func (ts *TelemetryService) trackConfig() {
 	ts.SendTelemetry(TrackConfigDataRetention, map[string]any{
 		"enable_message_deletion":       *cfg.DataRetentionSettings.EnableMessageDeletion,
 		"enable_file_deletion":          *cfg.DataRetentionSettings.EnableFileDeletion,
-		"enable_boards_deletion":        *cfg.DataRetentionSettings.EnableBoardsDeletion,
 		"message_retention_days":        *cfg.DataRetentionSettings.MessageRetentionDays,
 		"file_retention_days":           *cfg.DataRetentionSettings.FileRetentionDays,
-		"boards_retention_days":         *cfg.DataRetentionSettings.BoardsRetentionDays,
 		"deletion_job_start_time":       *cfg.DataRetentionSettings.DeletionJobStartTime,
 		"batch_size":                    *cfg.DataRetentionSettings.BatchSize,
 		"time_between_batches":          *cfg.DataRetentionSettings.TimeBetweenBatchesMilliseconds,