arm: kill dump_task_regs()

the last user had been fdpic
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/arm/include/asm/elf.h

@@ -111,10 +111,6 @@ extern int elf_check_arch(const struct elf32_hdr *);
 extern int arm_elf_read_implies_exec(int);
 #define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(stk)
 
-struct task_struct;
-int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
-#define ELF_CORE_COPY_TASK_REGS dump_task_regs
-
 #define CORE_DUMP_USE_REGSET
 #define ELF_EXEC_PAGESIZE	4096
 

arch/arm/kernel/process.c

@@ -272,15 +272,6 @@ int copy_thread(unsigned long clone_flags, unsigned long stack_start,
 	return 0;
 }
 
-/*
- * Fill in the task's elfregs structure for a core dump.
- */
-int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs)
-{
-	elf_core_copy_regs(elfregs, task_pt_regs(t));
-	return 1;
-}
-
 unsigned long get_wchan(struct task_struct *p)
 {
 	struct stackframe frame;