h8300, exec: remove redundant set_fs(USER_DS)

The address limit is already set in flush_old_exec() so those calls to
set_fs(USER_DS) are redundant.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/h8300/include/asm/processor.h

@@ -81,7 +81,6 @@ struct thread_struct {
 #if defined(__H8300H__)
 #define start_thread(_regs, _pc, _usp)			        \
 do {							        \
-	set_fs(USER_DS);           /* reads from user space */  \
   	(_regs)->pc = (_pc);				        \
 	(_regs)->ccr = 0x00;	   /* clear all flags */        \
 	(_regs)->er5 = current->mm->start_data;	/* GOT base */  \
@@ -91,7 +90,6 @@ do {							        \
 #if defined(__H8300S__)
 #define start_thread(_regs, _pc, _usp)			        \
 do {							        \
-	set_fs(USER_DS);           /* reads from user space */  \
 	(_regs)->pc = (_pc);				        \
 	(_regs)->ccr = 0x00;	   /* clear kernel flag */      \
 	(_regs)->exr = 0x78;       /* enable all interrupts */  \