The code snippet had been commented out since its introduction in
2004. In 1452e565 it was accidentally
un-commented-out, but it causes compilation errors. So ifdef it out
instead, with a comment. Note that I have no idea what the code does
and whether it actually is useful to keep for future reference or not.

Change-Id: Ie60ca065b2c65f86a7b382e246c1b650424daa1d