Removes unnecessary "object/applet" element test from data tests.

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
No ticket: Move jQuery.fn.size to deprecated. Close gh-1229.
(cherry picked from commit e3777b64377947b7222a2050aee7f2ec371faef9)
No ticket: Small simplification of .removeProp. Close gh-1227.