[krbdev.mit.edu #8318] git commit

[Tom Yu via RT]

Remove ksu -D flag documentation

ksu -D does not work in the default build, so we should not document
it.  Remove any mention of it from the usage message and from ksu.rst.

[ghudson at mit.edu: edited commit message; omit change to generated man
page]

(cherry picked from commit f4e3e096af73254f208d0fc0632db12fc559e1ad)

https://github.com/krb5/krb5/commit/48acdfdaf6ad519fe25c8b890c84e1da81ea3fd6
Author: Remi Ferrand <remi.ferrand at cc.in2p3.fr>
Committer: Tom Yu <tlyu at mit.edu>
Commit: 48acdfdaf6ad519fe25c8b890c84e1da81ea3fd6
Branch: krb5-1.12
 doc/user/user_commands/ksu.rst |    4 ----
 src/clients/ksu/main.c         |    2 +-
 2 files changed, 1 insertions(+), 5 deletions(-)