org-e-beamer/html: Asynchronous export ignores `org-export-show-temporary-export-buffer'

* contrib/lisp/org-e-beamer.el (org-e-beamer-export-as-latex): Ignore
  `org-export-show-temporary-export-buffer' when export is
  asynchronous.
* contrib/lisp/org-e-html.el (org-e-html-export-as-html): Ignore
  `org-export-show-temporary-export-buffer' when export is
  asynchronous.

Export output always goes in the Export Stack.

contrib/lisp/org-e-beamer.el

@@ -1019,8 +1019,7 @@ is non-nil."
 	      (insert output)
 	      (goto-char (point-min))
 	      (LaTeX-mode)
-	      (when org-export-show-temporary-export-buffer
-		(org-export-add-to-stack (current-buffer) 'e-beamer))))
+	      (org-export-add-to-stack (current-buffer) 'e-beamer)))
 	`(org-export-as 'e-beamer ,subtreep ,visible-only ,body-only
 			',ext-plist))
     (let ((outbuf (org-export-to-buffer

contrib/lisp/org-e-html.el

@@ -2786,8 +2786,7 @@ is non-nil."
 	      (insert output)
 	      (goto-char (point-min))
 	      (nxml-mode)
-	      (when org-export-show-temporary-export-buffer
-		(org-export-add-to-stack (current-buffer) 'e-html))))
+	      (org-export-add-to-stack (current-buffer) 'e-html)))
 	`(org-export-as 'e-html ,subtreep ,visible-only ,body-only ',ext-plist))
     (let ((outbuf (org-export-to-buffer
 		   'e-html "*Org E-HTML Export*"