lib/crypto: aes: Remove old AES en/decryption functions

lib/crypto: aes: Remove old AES en/decryption functions

Now that all callers of the aes_encrypt() and aes_decrypt() type-generic
macros are using the new types, remove the old functions.

Then, replace the macro with direct calls to the new functions, dropping
the "_new" suffix from them.

This completes the change in the type of the key struct that is passed
to aes_encrypt() and aes_decrypt().

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260112192035.10427-35-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>