kola: remove unused TargetDistroFromName function

Author: nikita-dubrovskii

mantle/util/distros.go

@@ -16,23 +16,10 @@ package util
 
 import (
 	"fmt"
-	"path/filepath"
-	"strings"
 
 	"github.com/coreos/coreos-assembler/pkg/builds"
 )
 
-// TargetDistroFromName returns the distribution given
-// the path to an artifact (usually a disk image).
-func TargetDistroFromName(artifact string) string {
-	basename := filepath.Base(artifact)
-	if strings.HasPrefix(basename, "rhcos-") || strings.HasPrefix(basename, "scos-") {
-		return "rhcos"
-	}
-	// For now, just assume fcos
-	return "fcos"
-}
-
 // TargetDistro returns the distribution of a cosa build
 func TargetDistro(build *builds.Build) (string, error) {
 	switch build.Name {