Discard grpc logs by default

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

log/grpc.go

@@ -1,14 +1,12 @@
 package log
 
 import (
-	"context"
+	"io/ioutil"
+	"log"
 
 	"google.golang.org/grpc/grpclog"
 )
 
 func init() {
-	ctx := WithModule(context.Background(), "grpc")
-
-	// completely replace the grpc logger with the logrus logger.
-	grpclog.SetLogger(G(ctx))
+	grpclog.SetLogger(log.New(ioutil.Discard, "", log.LstdFlags))
 }