the script i could suggest would last much longer as the following method :
open the find files/folder dialog, browse to the folder in question (make sure that recurse subdirectories is checked). Search for *.* and in advanced tab select file size is at most 0KB. let the search run.
When finished mark on of those files and hit CTRL+A. This should mark all files the search has found, then simply delete them.
Trust me when I say that scripting it would take at least an hour
[edit: forget about that, obvíusly that option is ignored ]
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