Remove old nss_wrapper module

This is/was used in order to let non-privileged scripts adjust
the running user's GECOS field information, by re-directing
lookups from /etc/passwd to $HOME/passwd. See OPENJDK-312.

More modern container runtimes (e.g. CRI-O) now update the GECOS
for the running user.

Signed-off-by: Jonathan Dowland <[email protected]>

Author: jmtd