s390: remove unneeded #include <asm/export.h>

There is no EXPORT_SYMBOL line there, hence #include <asm/export.h>
is unneeded.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20230806151641.394720-1-masahiroy@kernel.org
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

Author: masahir0y

arch/s390/kernel/mcount.S

@@ -9,8 +9,6 @@
 #include <asm/ftrace.h>
 #include <asm/nospec-insn.h>
 #include <asm/ptrace.h>
-#include <asm/export.h>
-
 
 #define STACK_FRAME_SIZE_PTREGS		(STACK_FRAME_OVERHEAD + __PT_SIZE)
 #define STACK_PTREGS			(STACK_FRAME_OVERHEAD)