Issue #2419: 'svn rm' of schedule add leaves working props file
             simple corrections to r17216/r17217.

* wc/svn.2419/subversion/libsvn_wc/adm_ops.c
(svn_wc_delete2): Cleaned up a bit and used more comprehendible
variable name.

* subversion/tests/clients/cmdline/prop_tests.py
(removal_schedule_added_props): Modified to be more robust and
cross check if all preparatory steps have succeeded.