With full knowledge and deliberation:
— He wittingly deleted the references.

synoniem: knowingly.

Roget 620: intentionally etc. adj.; advisedly, wittingly, knowingly, designedly, purposely, on purpose, by design, studiously, pointedly; with intent etc. n.; deliberately etc. (with premeditation) 611; with one's eyes open, in cold blood.    for; with a view, with an eye to; in order to, in order that; to the end that, with the intent that; for the purpose of, with the view of, in contemplation of, on account of.    in pursuance of, pursuant to; quo animo [Lat.]; to all intents and purposes.    ... meer laten zien