No reason to. Since they were immortal, beyond natural determinism, and closer to God in status, there were presumably no special pacts or "safety nets" for angels (or whatever Lucifer was originally contended to be by ancient believers).
Forgiveness was a tricky business in the Old Testament.[1] Not only were there no guarantees that a ritual procedure would garner mercy, but deliberate or heavily motivated defiance, rebellion, and disrespect were apparently unforgivable, even for mortal Hebrews who had contracts with God.[2] All the more applicable to high-ranking, fully responsible beings with thereby zero redemption modes.
With respect to Christian or New Testament ideology[3], Christ died to save lesser humans from the penalty of their transgressions, not fellow spiritual beings who had fallen. So even that payment for deliverance was not retrospectively applicable to the "demon-origin" events of the OT.
- - - footnotes - - -
Two excerpts from
Jewish Virtual Library (forgiveness):
[1] "
In the religion of ancient Israel, in contrast to that of its neighbors, rituals are not inherently efficacious."
[2] "
... Another limitation placed upon sacrificial means of obtaining forgiveness is that it can only apply to inadvertent errors (Num. 15:22–29). Blatant contempt of God cannot be expiated by sacrifice (Num. 15:30–31; I Sam. 3:14) or any other means (Ex. 23:21; Josh. 24:19). Moreover, contrition and compassion are indispensable coefficients of all rituals of forgiveness, whether they be expiatory sacrifices (Lev. 5:5–6; 16:21; Num. 5:6–7) or litanies for fasting (Joel 2:12–14; I Sam. 7:5–6)."
[3]
5 Myths About Forgiveness in the Bible:
The Greek word translated as "forgive" in the New Testament, aphiēmi, carried a wide range of meanings, including to remit (a debt), to leave (something or someone) alone, to allow (an action), to leave, to send away, to desert or abandon, and even to divorce.
In fact, the Greek word appears 146 times in the New Testament, but it is translated in most English versions as "forgive" only 38 of those times. Considering the entire range of meanings of this word gives us some indication of what "forgiveness" might have meant to listeners in Jesus' first-century context. Most of all, forgiveness was an action rather than a feeling, and so our contemporary ideas about forgiveness as an emotional state must come from sources other than the biblical text.
Here I submit five prevailing "myths" about forgiveness that have come into Christian belief and practice...