[remote storage] remove sendWriteRequestWithBackoff() "s" and "req" param

Signed-off-by: fuling <fuling.lgz@alibaba-inc.com>

storage/remote/queue_manager.go

@@ -431,7 +431,7 @@ func (t *QueueManager) sendMetadataWithBackoff(ctx context.Context, metadata []p
 	retry := func() {
 		t.metrics.retriedMetadataTotal.Add(float64(len(metadata)))
 	}
-	err = sendWriteRequestWithBackoff(ctx, t.cfg, t.client(), t.logger, req, attemptStore, retry)
+	err = sendWriteRequestWithBackoff(ctx, t.cfg, t.logger, attemptStore, retry)
 	if err != nil {
 		return err
 	}
@@ -1031,7 +1031,7 @@ func (s *shards) sendSamplesWithBackoff(ctx context.Context, samples []prompb.Ti
 		s.qm.metrics.retriedSamplesTotal.Add(float64(sampleCount))
 	}
 
-	err = sendWriteRequestWithBackoff(ctx, s.qm.cfg, s.qm.client(), s.qm.logger, req, attemptStore, onRetry)
+	err = sendWriteRequestWithBackoff(ctx, s.qm.cfg, s.qm.logger, attemptStore, onRetry)
 	if err != nil {
 		return err
 	}
@@ -1040,7 +1040,7 @@ func (s *shards) sendSamplesWithBackoff(ctx context.Context, samples []prompb.Ti
 	return nil
 }
 
-func sendWriteRequestWithBackoff(ctx context.Context, cfg config.QueueConfig, s WriteClient, l log.Logger, req []byte, attempt func(int) error, onRetry func()) error {
+func sendWriteRequestWithBackoff(ctx context.Context, cfg config.QueueConfig, l log.Logger, attempt func(int) error, onRetry func()) error {
 	backoff := cfg.MinBackoff
 	try := 0