runtime/cgo: remove __stack_chk_fail_local

I cannot find where it's being used.

This addresses a duplicate symbol issue encountered in golang/go#9327.

Change-Id: I8efda45a006ad3e19423748210c78bd5831215e0
Reviewed-on: https://go-review.googlesource.com/13615Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/runtime/cgo/gcc_386.S

@@ -35,11 +35,6 @@ EXT(crosscall_386):
 	popl %ebp
 	ret
 
-.globl EXT(__stack_chk_fail_local)
-EXT(__stack_chk_fail_local):
-1:
-	jmp 1b
-
 #ifdef __ELF__
 .section .note.GNU-stack,"",@progbits
 #endif

src/runtime/cgo/gcc_arm.S

@@ -36,10 +36,6 @@ EXT(crosscall_arm1):
 
 	pop {r4, r5, r6, r7, r8, r9, r10, r11, ip, pc}
 
-.globl EXT(__stack_chk_fail_local)
-EXT(__stack_chk_fail_local):
-1:
-	b 1b
 
 #ifdef __ELF__
 .section .note.GNU-stack,"",%progbits

src/runtime/cgo/gcc_arm64.S

@@ -47,10 +47,6 @@ EXT(crosscall1):
 	ldp x19, x20, [sp], #16
 	ret
 
-.globl EXT(__stack_chk_fail_local)
-EXT(__stack_chk_fail_local):
-1:
-	b 1b
 
 #ifdef __ELF__
 .section .note.GNU-stack,"",%progbits

src/runtime/cgo/gcc_ppc64x.S

@@ -129,11 +129,6 @@ restoreregs:
 
 	blr
 
-.globl EXT(__stack_chk_fail_local)
-EXT(__stack_chk_fail_local):
-1:
-	// TODO(austin)
-	b 1b
 
 #ifdef __ELF__
 .section .note.GNU-stack,"",%progbits