[chore] removing unused internal variable (#11052)

This is apparently not used anywhere

Signed-off-by: Alex Boten <223565+codeboten@users.noreply.github.com>

internal/obsreportconfig/obsmetrics/obs_exporter.go

@@ -14,22 +14,16 @@ const (
 	SentSpansKey = "sent_spans"
 	// FailedToSendSpansKey used to track spans that failed to be sent by exporters.
 	FailedToSendSpansKey = "send_failed_spans"
-	// FailedToEnqueueSpansKey used to track spans that failed to be enqueued by exporters.
-	FailedToEnqueueSpansKey = "enqueue_failed_spans"
 
 	// SentMetricPointsKey used to track metric points sent by exporters.
 	SentMetricPointsKey = "sent_metric_points"
 	// FailedToSendMetricPointsKey used to track metric points that failed to be sent by exporters.
 	FailedToSendMetricPointsKey = "send_failed_metric_points"
-	// FailedToEnqueueMetricPointsKey used to track metric points that failed to be enqueued by exporters.
-	FailedToEnqueueMetricPointsKey = "enqueue_failed_metric_points"
 
 	// SentLogRecordsKey used to track logs sent by exporters.
 	SentLogRecordsKey = "sent_log_records"
 	// FailedToSendLogRecordsKey used to track logs that failed to be sent by exporters.
 	FailedToSendLogRecordsKey = "send_failed_log_records"
-	// FailedToEnqueueLogRecordsKey used to track logs that failed to be enqueued by exporters.
-	FailedToEnqueueLogRecordsKey = "enqueue_failed_log_records"
 )
 
 var (