lint: remove dead code

according to golint-ci, and confirmed by `git grep`, this code
was lingering around unused. Let's get rid of it.

Signed-off-by: Francesco Romani <fromani@redhat.com>

cmd/ghw-snapshot/main.go

@@ -21,12 +21,6 @@ import (
 )
 
 var (
-	// version of application at compile time (-X 'main.version=$(VERSION)').
-	version = "(Unknown Version)"
-	// buildHash GIT hash of application at compile time (-X 'main.buildHash=$(GITCOMMIT)').
-	buildHash = "No Git-hash Provided."
-	// buildDate of application at compile time (-X 'main.buildDate=$(BUILDDATE)').
-	buildDate = "No Build Date Provided."
 	// show debug output
 	debug = false
 	// output filepath to save snapshot to

pkg/block/block_linux.go

@@ -457,18 +457,3 @@ func parseMountEntry(line string) *mountEntry {
 	res.Options = opts
 	return res
 }
-
-func partitionMountPoint(paths *linuxpath.Paths, part string) string {
-	mp, _, _ := partitionInfo(paths, part)
-	return mp
-}
-
-func partitionType(paths *linuxpath.Paths, part string) string {
-	_, pt, _ := partitionInfo(paths, part)
-	return pt
-}
-
-func partitionIsReadOnly(paths *linuxpath.Paths, part string) bool {
-	_, _, ro := partitionInfo(paths, part)
-	return ro
-}

pkg/pci/pci.go

@@ -9,7 +9,6 @@ package pci
 import (
 	"encoding/json"
 	"fmt"
-	"regexp"
 
 	"github.com/jaypipes/pcidb"
 
@@ -27,12 +26,6 @@ type Address pciaddr.Address
 // backward compatibility, to be removed in 1.0.0
 var AddressFromString = pciaddr.FromString
 
-var (
-	regexAddress *regexp.Regexp = regexp.MustCompile(
-		`^(([0-9a-f]{0,4}):)?([0-9a-f]{2}):([0-9a-f]{2})\.([0-9a-f]{1})$`,
-	)
-)
-
 type Device struct {
 	// The PCI address of the device
 	Address   string         `json:"address"`

pkg/util/util.go

@@ -17,8 +17,7 @@ import (
 )
 
 const (
-	UNKNOWN            = "unknown"
-	disableWarningsEnv = "GHW_DISABLE_WARNINGS"
+	UNKNOWN = "unknown"
 )
 
 type closer interface {