Removing unused xp_file.h includes.

Bug #38061 r=bryner

gfx/src/xprint/nsXPrintContext.h

@@ -44,7 +44,6 @@
 #include <X11/Xlib.h>
 #include <X11/extensions/Print.h>
 #include "xp_core.h"
-#include "xp_file.h"
 #include "nsColor.h"
 #include "nsCoord.h"
 #include "nsIImage.h"

mailnews/compose/src/nsMsgSendPart.h

@@ -41,7 +41,6 @@
 #include "msgCore.h"
 #include "prprf.h" /* should be defined into msgCore.h? */
 #include "xp_core.h"
-#include "xp_file.h"
 #include "nsMsgSend.h"
 
 typedef int (*MSG_SendPartWriteFunc)(const char* line, PRInt32 size,