Revert^3 "Keystore: Validate curve names in XDH and ED25519"

This reverts commit abbaa445.

Reason for revert: frameworks change should not have gone into 24Q2
(cherry picked from https://android-review.googlesource.com/q/commit:ad79ede464a1d95508e4f7e65a29459c77219814)
Bug: 329008459

Ignore-AOSP-First: reverting incorrect merge into release branch
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:3b5a6bfb75f489033c5601c965a9236fb2a64903)
Merged-In: Ie63b8dfc8bb562b33e6e529d537bde64ae2c6d53
Change-Id: Ie9b5218a707cf3ef8cb34f5fadd68e34683a5b15