[glibc] elf.h: Remove SHF_GNU_BUILD_NOTE.

[Mark Wielaard]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5a96fe2e02c740771206a2d96b902e97675daabb

commit 5a96fe2e02c740771206a2d96b902e97675daabb
Author: Mark Wielaard <mark@klomp.org>
Date:   Fri Dec 11 23:58:24 2020 +0100

    elf.h: Remove SHF_GNU_BUILD_NOTE.
    
    SHF_GNU_BUILD_NOTE was a binutils experiment.  And it is no longer
    needed. It was also removed from binutils.

Diff:
---
 elf/elf.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/elf/elf.h b/elf/elf.h
index 0300d7cfac..8e3e618fa1 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -478,7 +478,6 @@ typedef struct
 #define SHF_COMPRESSED	     (1 << 11)	/* Section with compressed data. */
 #define SHF_MASKOS	     0x0ff00000	/* OS-specific.  */
 #define SHF_MASKPROC	     0xf0000000	/* Processor-specific */
-#define SHF_GNU_BUILD_NOTE   (1 << 20)  /* Contains GNU build notes.  */
 #define SHF_GNU_RETAIN	     (1 << 21)  /* Not to be GCed by linker.  */
 #define SHF_ORDERED	     (1 << 30)	/* Special ordering requirement
 					   (Solaris).  */