x86: remove pda.h

Impact: cleanup

Signed-off-by: Brian Gerst <brgerst@gmail.com>

arch/x86/kernel/asm-offsets_64.c

@@ -11,7 +11,6 @@
 #include <linux/hardirq.h>
 #include <linux/suspend.h>
 #include <linux/kbuild.h>
-#include <asm/pda.h>
 #include <asm/processor.h>
 #include <asm/segment.h>
 #include <asm/thread_info.h>