fix context reference

app/log/command/command.go

@@ -3,7 +3,8 @@ package command
 //go:generate go run $GOPATH/src/v2ray.com/core/common/errors/errorgen/main.go -pkg command -path App,Log,Command
 
 import (
-	context "golang.org/x/net/context"
+	"context"
+
 	grpc "google.golang.org/grpc"
 
 	"v2ray.com/core"

app/log/command/config.pb.go

@@ -5,7 +5,8 @@ import fmt "fmt"
 import math "math"
 
 import (
-	context "golang.org/x/net/context"
+	"context"
+
 	grpc "google.golang.org/grpc"
 )
 

app/proxyman/command/command.pb.go

@@ -8,7 +8,8 @@ import v2ray_core_common_serial "v2ray.com/core/common/serial"
 import v2ray_core "v2ray.com/core"
 
 import (
-	context "golang.org/x/net/context"
+	"context"
+
 	grpc "google.golang.org/grpc"
 )