binutils: Drop mips gold patch

As mentioned in a followup to the patch upstream:

https://sourceware.org/legacy-ml/binutils/2016-08/msg00215.html

"With 2.16.1, --enable-gold is just ignored when building on mips"

so we don't need the patch since 2.16.1.

(From OE-Core rev: 3c230c70f28aef21ae986679d783551832b4e3fa)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/binutils/binutils/0012-Detect-64-bit-MIPS-targets.patch

@@ -1,47 +0,0 @@
-From 02374940dd34fddd2b04624af3f23e01f9cb81cd Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Fri, 31 Mar 2017 11:42:03 -0700
-Subject: [PATCH] Detect 64-bit MIPS targets
-
-Add mips64 target triplets and default to N64
-
-Upstream-Status: Submitted
-https://sourceware.org/ml/binutils/2016-08/msg00048.html
-
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
- gold/configure.tgt | 14 ++++++++++++++
- 1 file changed, 14 insertions(+)
-
-diff --git a/gold/configure.tgt b/gold/configure.tgt
-index cac0866e628..24fbf641456 100644
---- a/gold/configure.tgt
-+++ b/gold/configure.tgt
-@@ -153,6 +153,13 @@ aarch64*-*)
-  targ_big_endian=false
-  targ_extra_big_endian=true
-  ;;
-+mips*64*el*-*-*|mips*64*le*-*-*)
-+ targ_obj=mips
-+ targ_machine=EM_MIPS_RS3_LE
-+ targ_size=64
-+ targ_big_endian=false
-+ targ_extra_big_endian=true
-+ ;;
- mips*el*-*-*|mips*le*-*-*)
-  targ_obj=mips
-  targ_machine=EM_MIPS_RS3_LE
-@@ -160,6 +167,13 @@ mips*el*-*-*|mips*le*-*-*)
-  targ_big_endian=false
-  targ_extra_big_endian=true
-  ;;
-+mips*64*-*-*)
-+ targ_obj=mips
-+ targ_machine=EM_MIPS
-+ targ_size=64
-+ targ_big_endian=true
-+ targ_extra_big_endian=false
-+ ;;
- mips*-*-*)
-  targ_obj=mips
-  targ_machine=EM_MIPS