archive: remove testing of gzip archive

It has been determined that this test isn't really necessary. busybox
gzip is probably not going to break (and would be discovered elsewhere
too if it does...)

fixes #4

pkgs/archive/archive.go

@@ -13,7 +13,6 @@ import (
 	"io"
 	"log"
 	"os"
-	"os/exec"
 	"path/filepath"
 	"strings"
 )
@@ -52,12 +51,6 @@ func (archive *Archive) Write(path string, mode os.FileMode) error {
 		return err
 	}
 
-	// test the archive to make sure it's valid
-	if err := test(path); err != nil {
-		log.Print("Verification of archive failed!")
-		return err
-	}
-
 	if err := os.Chmod(path, mode); err != nil {
 		return err
 	}
@@ -180,19 +173,6 @@ func (archive *Archive) AddFile(file string, dest string) error {
 	return nil
 }
 
-// Use busybox gzip to test archive
-func test(path string) error {
-	cmd := exec.Command("busybox", "gzip", "-t", path)
-	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
-	if err := cmd.Run(); err != nil {
-		log.Print("'boot-deploy' command failed: ")
-		return err
-	}
-
-	return nil
-}
-
 func (archive *Archive) writeCompressed(path string, mode os.FileMode) error {
 	// TODO: support other compression formats, based on deviceinfo
 	fd, err := os.Create(path)