Revision 1879474

Remove an unused field in merge code.

There is no code anywhere that sets this flag.  There was in svn 1.6, but
not in svn 1.7 and later.

For issue #4859 "Merge removing a folder with non-inheritable mergeinfo ->
E155023: can't set properties: invalid status for updating properties".

* subversion/libsvn_client/mergeinfo.h
  (svn_client__merge_path_t): Remove 'scheduled_for_deletion' field.

* subversion/libsvn_client/merge.c
  (remove_absent_children): Remove reference to it.