Allow disabling timestamps with colored output

[carolynvs]

When using colored output, DisableTimestamps doesn't work.

Sample Application

package main

import "github.com/Sirupsen/logrus"

func main() {
    l := logrus.New()
    l.Formatter = &logrus.TextFormatter{
        DisableTimestamp: true,
        ForceColors:      true,
    }

    l.Info("I'm a little teapot")
}

Expected Output

INFO I'm a little teapot

Actual Output

INFO[0000] I'm a little teapot

[cdrage]

I'm experiencing the same issue. I disable time stamp and with colours, and I'm still getting [0000].

ping @sirupsen ?

[stevvooe]

LGTM

Rebuilding.

[jonathan-robertson]

Wow, how'd I miss this? I made a duplicate pull request in #427 (am closing mine now)

👍 wish I'd noticed your PR first

[stevvooe]

@sirupsen PTAL

[cdrage]

@carolynvs @sirupsen

EDIT: DISREGARD! Vendoring screwed up miraculously so I didn't have the latest commit. Issue has been solved.

Uh oh. This seems to have crept back in.

Despite setting:

    formatter := new(log.TextFormatter)                                                                                                                                                                                                                                           
    formatter.DisableTimestamp = true                                                                                                                                                                                                                                             
    formatter.ForceColors = true                                                                                                                                                                                                                                                  
    log.SetFormatter(formatter) 

I'm getting [0000] again as a timestamp.

FATA[0000] No 'docker-compose' file found: stat docker-compose.yaml: no such file or directory 

I'll see what commit caused this!