MINOR: [R] Small addition to disable extraneous duckdb building
MINOR: [R] Small addition to disable extraneous duckdb building

_It turns out_ that simply grepping DESCRIPTION for `duckdb` will always return true (even if it has been pruned from Suggests), since we collate our filenames and one of our filenames includes duckdb

Closes #11893 from jonkeane/jonkeane-patch-1

Authored-by: Jonathan Keane <28d17c45cab2bb8b25bea44a915713e26ce37e1b@gmail.com>
Signed-off-by: Jonathan Keane <28d17c45cab2bb8b25bea44a915713e26ce37e1b@gmail.com>

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