gcc7: drop stray uClibc specific patch

The patch seems to have been left behind when other uClibc specific
patches were purged from gcc in:

  http://git.openembedded.org/openembedded-core/commit/?id=ec03023d2165b49a52b83bac1ea2f0bfded7b852

(From OE-Core rev: f71bc69e5b7581c53071055b694bb0dbfe4b4a87)

Signed-off-by: Andre McCurdy <armccurdy@gmail.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

@@ -32,7 +32,6 @@ BASEURI ?= "${GNU_MIRROR}/gcc/gcc-${PV}/gcc-${PV}.tar.xz"
 SRC_URI = "\
            ${BASEURI} \
            file://0001-gcc-4.3.1-ARCH_FLAGS_FOR_TARGET.patch \
-           file://0008-c99-snprintf.patch \
            file://0009-gcc-poison-system-directories.patch \
            file://0010-gcc-poison-dir-extend.patch \
            file://0011-gcc-4.3.3-SYSROOT_CFLAGS_FOR_TARGET.patch \

meta/recipes-devtools/gcc/gcc-7.3/0008-c99-snprintf.patch

@@ -1,28 +0,0 @@
-From 732f10eead61830a8aee1bf38cce892da25c35b1 Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Fri, 29 Mar 2013 08:49:03 +0400
-Subject: [PATCH 08/47] c99-snprintf
-
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
-
-Upstream-Status: Pending
----
- libstdc++-v3/include/c_std/cstdio | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/libstdc++-v3/include/c_std/cstdio b/libstdc++-v3/include/c_std/cstdio
-index 43969892aa2..12148457909 100644
---- a/libstdc++-v3/include/c_std/cstdio
-+++ b/libstdc++-v3/include/c_std/cstdio
-@@ -144,7 +144,7 @@ namespace std
-   using ::vsprintf;
- } // namespace std
- 
--#if _GLIBCXX_USE_C99_STDIO
-+#if _GLIBCXX_USE_C99_STDIO || defined(__UCLIBC__)
- 
- #undef snprintf
- #undef vfscanf
--- 
-2.12.2
-