[Pale-Moon] Issue #1865 - Remove XP_MACOSX conditional blocks.

application/palemoon/base/content/aboutDialog.xul

@@ -15,20 +15,12 @@
 %aboutDialogDTD;
 ]>
 
-#ifdef XP_MACOSX
-<?xul-overlay href="chrome://browser/content/macBrowserOverlay.xul"?>
-#endif
-
 <window xmlns:html="http://www.w3.org/1999/xhtml"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         id="PMaboutDialog"
         windowtype="Browser:About"
         onload="init(event);"
-#ifdef XP_MACOSX
-        inwindowmenu="false"
-#else
         title="&aboutDialog.title;"
-#endif
         role="dialog"
         aria-describedby="version distribution distributionId communityDesc contributeDesc trademark"
         >
@@ -83,8 +75,4 @@
   <keyset>
     <key keycode="VK_ESCAPE" oncommand="window.close();"/>
   </keyset>
-
-#ifdef XP_MACOSX
-#include browserMountPoints.inc
-#endif
 </window>