Delete all unused/obsolete .elist files

These (export lists) aren't needed on modern compilers and haven't
been for quite awhile (like 2+ decades).

cde/lib/pam/pam_modules/unix/libpam_unix.elist

@@ -1,48 +0,0 @@
-/****************************************************************************
- * Export list for libpam_unix. 
- * This list *must* be updated whenever a change is made to the libpam_unix API.
- *
- * The syntax for the symbol declarations in this list is as follows:
- *       public       sym => Public   C   symbol, i.e., publicised API
- *       private      sym => Private  C   symbol, i.e., unpublicised API
- *       internal     sym => Internal C   symbol, i.e., not part of API
- *       publicC++    sym => Public   C++ symbol, i.e., publicised API
- *       privateC++   sym => Private  C++ symbol, i.e., unpublicised API
- *       internalC++  sym => Internal C++ symbol, i.e., not part of API
- * 
- * $TOG: libpam_unix.elist /main/1 1999/09/08 15:59:55 mgreess $
- *****************************************************************************/
-
-public pam_sm_authenticate
-public pam_sm_setcred
-public pam_sm_acct_mgmt
-public pam_sm_open_session
-public pam_sm_close_session
-public pam_sm_chauthtok
-
-internal get_ns
-internal __set_authtoken_attr
-internal defcntl
-internal defopen
-internal ck_perm
-internal gethomedir
-internal str2spwd
-internal xdr_yppasswd
-internal getspnam_from
-internal update_authtok_file
-internal setup_attr
-internal getfingerinfo
-internal free_setattr
-internal defread
-internal repository_to_string
-internal _priv_lock
-internal getpwnam_from
-internal update_authtok_nis
-internal attr_find
-internal getloginshell
-internal xdr_passwd
-internal attr_match
-internal __update_authtok
-internal free_passwd_structs
-internal __get_authtoken_attr
-