Remove some compat code from CEDET

Remove some compat code from CEDET

* lisp/cedet/data-debug.el (data-debug-overlay-properties)
(data-debug-overlay-p, dd-propertize):
Redefine as obsolete function aliases.
(data-debug-insert-overlay-props, data-debug-insert-hash-table)
(data-debug-insert-hash-table-button)
(data-debug-insert-widget-properties, data-debug-insert-widget)
(data-debug-insert-symbol-from-point)
(data-debug-insert-symbol-button, data-debug-insert-string)
(data-debug-insert-number, data-debug-thing-alist):
Don't use obsolete names.