Move NewSafeKey functionally into the dshelp package in go-ipfs.

key.go

@@ -7,7 +7,6 @@ import (
 	dsq "github.com/ipfs/go-datastore/query"
 
 	"github.com/satori/go.uuid"
-	base32 "github.com/whyrusleeping/base32"
 )
 
 /*
@@ -59,10 +58,6 @@ func RawKey(s string) Key {
 	return Key{s}
 }
 
-func NewSafeKey(s string) Key {
-	return Key{base32.RawStdEncoding.EncodeToString([]byte(s))}
-}
-
 // KeyWithNamespaces constructs a key out of a namespace slice.
 func KeyWithNamespaces(ns []string) Key {
 	return NewKey(strings.Join(ns, "/"))