revert use gnupghome var

prepare_keys.sh

@@ -25,11 +25,11 @@ _do ssh-add ~/.ssh/id_rsa
 # GPG setup
 _log command "GPG setup"
 # Configure gpg.conf
-_do install -dm700 $GNUPGHOME/.gnupg
+_do install -dm700 ~/.gnupg
 echo "\nkeyserver-options auto-key-retrieve
 auto-key-locate local,wkd
 pinentry-mode loopback
-passphrase $GPG_PASSWORD" >> $GNUPGHOME/gpg.conf
+passphrase $GPG_PASSWORD" >> ~/.gnupg/gpg.conf
 _do gpg -v --batch --import <(echo "$GPG_PRIVATE_KEY")
 # Configure gpg-agent.conf
 _do echo "allow-loopback-pinentry" > ~/.gnupg/gpg-agent.conf