doc: remove obsolete references
doc: remove obsolete references

We don't use comp.lang.asm.x86 or freshmeat for announements anymore.

Signed-off-by: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@linux.intel.com>

techkey/nasm,techkey/nasm,techkey/nasm,techkey/nasm,techkey/nasm