Please remove old Spongy Castle code

[Neustradamus]

Can you remove totally Spongy Castle?

• https://github.com/GENERALBYTESCOM/batm_public/search?q=spongycastle&unscoped_q=spongycastle

Linked to:

• https://github.com/GENERALBYTESCOM/batm_public/issues/352

[generalbytes]

We keep current version of bouncy/spongy castle due to bitcoinj dependency and terminal code dependency. We plan on upgrading it in 2021Q2 where we will rework dependencies into separate projects.

[Neustradamus]

@generalbytes: bitcoinj uses Bouncy Castle 1.68 :)

No Spongy Castle: https://github.com/bitcoinj/bitcoinj/search?q=spongycastle

Bouncy Castle 1.68: https://github.com/bitcoinj/bitcoinj/search?q=bouncycastle

[Neustradamus]

@generalbytes: Can you remove old Spongy Castle code?

• https://github.com/GENERALBYTESCOM/batm_public/search?q=spongycastle&unscoped_q=spongycastle

And update Bouncy Castle to 1.69?