lckpwdf: remove a wrong comment and one write-only variable
lckpwdf: remove a wrong comment and one write-only variable

no code changes (verified with objdump)

Signed-off-by: Denys Vlasenko <42afb3a19136e88700e8b77002ea6a5a94c16782@googlemail.com>

joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc