use internal emacs pin for gpg password auth

init.el

@@ -547,3 +547,8 @@
   (erc-notifications-disable)
   (add-hook 'focus-in-hook 'erc-notifications-disable)
   (add-hook 'focus-out-hook 'erc-notifications-enable))
+
+;;; GPG
+
+;; Use internal pin
+(setenv "GPG_AGENT_INFO" nil)