x86/tools: Remove chkobjdump.awk

This check is superfluous now that the minimum version of binutils to
build the kernel is 2.23. This also fixes an error seen with
llvm-objdump because it does not support '-v' prior to LLVM 13:

llvm-objdump: error: unknown argument '-v'

Link: https://reviews.llvm.org/D101483
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2 files changed