system/libucontext: delete patch no longer used

system/libucontext/0001-Reorder-registers-in-other-assembler-files.patch

-From 42c84cbe58c3c9089cc2a46a425210f20b47bcc9 Mon Sep 17 00:00:00 2001
-From: "A. Wilcox" <AWilcox@Wilcox-Tech.com>
-Date: Thu, 19 Jul 2018 17:17:26 -0500
-Subject: [PATCH] Reorder registers in other assembler files
-
-This fixes the previous commit which changed the register order in
-swapcontext only, which caused setcontext to subtly corrupt the stack.
----
- arch/x86_64/getcontext.S | 4 ++--
- arch/x86_64/setcontext.S | 4 ++--
- 2 files changed, 4 insertions(+), 4 deletions(-)
-
-diff --git a/arch/x86_64/getcontext.S b/arch/x86_64/getcontext.S
-index 7e56a1a..24cc1d3 100644
---- a/arch/x86_64/getcontext.S
-+++ b/arch/x86_64/getcontext.S
-@@ -22,8 +22,8 @@ __getcontext:
- 	movq	%r14, 88(%rdi)
- 	movq	%r15, 96(%rdi)
- 	movq	%rdi, 104(%rdi)
--	movq	%rbp, 112(%rdi)
--	movq	%rsi, 120(%rdi)
-+	movq	%rsi, 112(%rdi)
-+	movq	%rbp, 120(%rdi)
- 	movq	%rbx, 128(%rdi)
- 	movq	%rdx, 136(%rdi)
- 	movq	$1, 144(%rdi)		/* $1 is %rax */
-diff --git a/arch/x86_64/setcontext.S b/arch/x86_64/setcontext.S
-index 607d40c..aba3775 100644
---- a/arch/x86_64/setcontext.S
-+++ b/arch/x86_64/setcontext.S
-@@ -21,8 +21,8 @@ __setcontext:
- 	movq    80(%rdi), %r13
- 	movq    88(%rdi), %r14
- 	movq    96(%rdi), %r15
--	movq    112(%rdi), %rbp
--	movq    120(%rdi), %rsi
-+	movq    112(%rdi), %rsi
-+	movq    120(%rdi), %rbp
- 	movq    128(%rdi), %rbx
- 	movq    136(%rdi), %rdx
- 	movq    144(%rdi), %rax
--- 
-2.15.0
-