gcc: drop patch that is already upstream

Due to patch fuzz, it was applied again, so the same code sequence was
repeated twice. Not sure if that caused any bugs, but certainly wasn't
the right thing to do.

(From OE-Core rev: e3a50788bfeabbde226e280803a01dd7f765b2bc)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/gcc-7.3.inc

@@ -73,7 +73,6 @@ SRC_URI = "\
            file://0047-sync-gcc-stddef.h-with-musl.patch \
            file://0048-gcc-Enable-static-PIE.patch \
            file://fix-segmentation-fault-precompiled-hdr.patch \
-           file://0050-RISC-V-Handle-non-legitimate-address-in-riscv_legiti.patch \
            file://no-sse-fix-test-case-failures.patch \
            ${BACKPORTS} \
 "

meta/recipes-devtools/gcc/gcc-7.3/0050-RISC-V-Handle-non-legitimate-address-in-riscv_legiti.patch

@@ -1,51 +0,0 @@
-From 16210e6270e200cd4892a90ecef608906be3a130 Mon Sep 17 00:00:00 2001
-From: Kito Cheng <kito.cheng@gmail.com>
-Date: Thu, 4 May 2017 02:11:13 +0800
-Subject: [PATCH] RISC-V: Handle non-legitimate address in
- riscv_legitimize_move
-
-GCC may generate non-legitimate address due to we allow some
-load/store with non-legitimate address in pic.md.
-
-  2017-05-12  Kito Cheng  <kito.cheng@gmail.com>
-
-      * config/riscv/riscv.c (riscv_legitimize_move): Handle
-      non-legitimate address.
----
-Upstream-Status: Backport
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
-
- gcc/ChangeLog            |  5 +++++
- gcc/config/riscv/riscv.c | 16 ++++++++++++++++
- 2 files changed, 21 insertions(+)
-
-diff --git a/gcc/config/riscv/riscv.c b/gcc/config/riscv/riscv.c
-index f7fec4bfcf8..d519be1659a 100644
---- a/gcc/config/riscv/riscv.c
-+++ b/gcc/config/riscv/riscv.c
-@@ -1385,6 +1385,22 @@ riscv_legitimize_move (enum machine_mode mode, rtx dest, rtx src)
-       return true;
-     }
- 
-+  /* RISC-V GCC may generate non-legitimate address due to we provide some
-+     pattern for optimize access PIC local symbol and it's make GCC generate
-+     unrecognizable instruction during optmizing.  */
-+
-+  if (MEM_P (dest) && !riscv_legitimate_address_p (mode, XEXP (dest, 0),
-+						   reload_completed))
-+    {
-+      XEXP (dest, 0) = riscv_force_address (XEXP (dest, 0), mode);
-+    }
-+
-+  if (MEM_P (src) && !riscv_legitimate_address_p (mode, XEXP (src, 0),
-+						  reload_completed))
-+    {
-+      XEXP (src, 0) = riscv_force_address (XEXP (src, 0), mode);
-+    }
-+
-   return false;
- }
- 
--- 
-2.14.2
-