start to move session stores into there own key value in memory store

src/session/session_helpers.go

@@ -2,7 +2,6 @@ package session
 
 import (
 	"crypto/rand"
-	"crypto/sha256"
 	"encoding/base64"
 )
 
@@ -16,9 +15,3 @@ func GenerateSessionToken(length int) (string, error) {
 	token := base64.RawURLEncoding.EncodeToString(b)
 	return token, nil
 }
-
-// more helper
-func hashSession(session_id string) string {
-	tokenEncoded := sha256.Sum256([]byte(session_id))
-	return base64.RawURLEncoding.EncodeToString(tokenEncoded[:])
-}