RFA: Remove .not section from x86 assembler

[H.J. Lu]

This x86 assembler patch:

https://sourceware.org/ml/binutils/2001-11/msg00344.html

generates a .note section for .arch directive so that gdb can
tell which architecture an i386 binary belongs:

https://sourceware.org/ml/binutils/2001-11/msg00271.html

However, x86 assembly code can have any instructions.
A .note section doesn't help.  Is GDB using the .note section
today?  If not, I'd like to remove it.


-- 
H.J.