Remove invalid -E option from dvipng call

lisp/ChangeLog

@@ -1,5 +1,8 @@
 2009-08-05  Carsten Dominik  <carsten.dominik@gmail.com>
 
+	* org.el (org-create-formula-image): Remove the -E option for
+	dvipng.
+
 	* org-exp.el (org-default-export-plist): Respect #+BIND.
 	(org-export-confirm-letbind): New function.
 

lisp/org.el

@@ -13961,7 +13961,7 @@ The images can be removed again with \\[org-ctrl-c-ctrl-c]."
 	(progn (message "Failed to create dvi file from %s" texfile) nil)
       (condition-case nil
 	  (call-process "dvipng" nil nil nil
-			"-E" "-fg" fg "-bg" bg
+			"-fg" fg "-bg" bg
 			"-D" dpi
 			;;"-x" scale "-y" scale
 			"-T" "tight"