Disable trailing header support for MinIO tiers (#19561)

AWS S3 trailing header support was recently enabled on the warm tier
client connection to MinIO type remote tiers. With this enabled, we are
seeing the following error message at http transport layer.

> Unsolicited response received on idle HTTP channel starting with "HTTP/1.1 400 Bad Request\r\nContent-Type: text/plain; charset=utf-8\r\nConnection: close\r\n\r\n400 Bad Request"; err=<nil>

This is an interim fix until we identify the root cause for this behaviour in the
minio-go client package.

cmd/warm-backend-minio.go

@@ -113,10 +113,9 @@ func newWarmBackendMinIO(conf madmin.TierMinIO, tier string) (*warmBackendMinIO,
 		getRemoteTierTargetInstanceTransport = NewHTTPTransportWithTimeout(10 * time.Minute)
 	})
 	opts := &minio.Options{
-		Creds:           creds,
-		Secure:          u.Scheme == "https",
-		Transport:       getRemoteTierTargetInstanceTransport,
-		TrailingHeaders: true,
+		Creds:     creds,
+		Secure:    u.Scheme == "https",
+		Transport: getRemoteTierTargetInstanceTransport,
 	}
 	client, err := minio.New(u.Host, opts)
 	if err != nil {