vpython: don't mess with logging in -dev mode.

vpython/application/application.go

 // Copyright 2017 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package application
 
 import (
         "flag"
         "fmt"
         "io/ioutil"
@@ skipping 70 matching lines @@
 
 func (cfg *Config) mainDev(c context.Context, args []string) error {
         app := cli.Application{
                 Name:  "vpython",
                 Title: "VirtualEnv Python Bootstrap (Development Mode)",
                 Context: func(context.Context) context.Context {
                         // Discard the entry Context and use the one passed to us.
                         c := c
 
                         // Install our Config instance into the Context.
-                        c = withConfig(c, cfg)
-
-                        // Drop down to Info level debugging.
-                        if logging.GetLevel(c) > logging.Info {
-                                c = logging.SetLevel(c, logging.Info)
-                        }
-                        return c
+                        return withConfig(c, cfg)
                 },
                 Commands: []*subcommands.Command{
                         subcommands.CmdHelp,
                         subcommandInstall,
                         subcommandVerify,
                 },
         }
 
         return ReturnCodeError(subcommands.Run(&app, args))
 }
@@ skipping 95 matching lines @@
 
 // Main is the main application entry point.
 func (cfg *Config) Main(c context.Context) int {
         c = gologger.StdConfig.Use(c)
         c = logging.SetLevel(c, logging.Warning)
 
         return run(c, func(c context.Context) error {
                 return cfg.mainImpl(c, os.Args[1:])
         })
 }