[uml] remove the mempcy patch, fixes build failures on most x86_64 hosts

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17989 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/uml/patches/003-memcpy_x86_64_fix.patch

@@ -1,26 +0,0 @@
---- a/arch/um/os-Linux/user_syms.c
-+++ b/arch/um/os-Linux/user_syms.c
-@@ -23,10 +23,8 @@ extern int printf(const char *, ...);
- EXPORT_SYMBOL(strstr);
- #endif
- 
--#ifndef __x86_64__
- extern void *memcpy(void *, const void *, size_t);
- EXPORT_SYMBOL(memcpy);
--#endif
- 
- EXPORT_SYMBOL(memmove);
- EXPORT_SYMBOL(memset);
---- a/arch/um/sys-x86_64/ksyms.c
-+++ b/arch/um/sys-x86_64/ksyms.c
-@@ -2,10 +2,5 @@
- #include <asm/string.h>
- #include <asm/checksum.h>
- 
--/*XXX: we need them because they would be exported by x86_64 */
--#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4
--EXPORT_SYMBOL(memcpy);
--#else
- EXPORT_SYMBOL(__memcpy);
--#endif
- EXPORT_SYMBOL(csum_partial);