Disable http2 until we have upstream bugs fixed (#7711)

We should revert this PR in future once we
have upstream bugs fixed regarding http2 behavior

cmd/rest/client.go

@@ -28,7 +28,6 @@ import (
 	"time"
 
 	xhttp "github.com/minio/minio/cmd/http"
-	"golang.org/x/net/http2"
 )
 
 // DefaultRESTTimeout - default RPC timeout is one minute.
@@ -118,12 +117,6 @@ func NewClient(url *url.URL, tlsConfig *tls.Config, timeout time.Duration, newAu
 		TLSClientConfig:       tlsConfig,
 		DisableCompression:    true,
 	}
-	if tlsConfig != nil {
-		// If TLS is enabled configure http2
-		if err := http2.ConfigureTransport(tr); err != nil {
-			return nil, err
-		}
-	}
 	return &Client{
 		httpClient:          &http.Client{Transport: tr},
 		httpIdleConnsCloser: tr.CloseIdleConnections,