fix: remove wsts library

Author: csgui

stacks-common/src/util/secp256k1/mod.rs

@@ -1,13 +1,6 @@
 #[cfg(not(feature = "wasm"))]
 mod secp256k1;
 
-#[cfg(not(feature = "wasm"))]
-use wsts::common::Signature as WSTSSignature;
-#[cfg(not(feature = "wasm"))]
-use wsts::curve::point::{Compressed, Point};
-#[cfg(not(feature = "wasm"))]
-use wsts::curve::scalar::Scalar;
-
 #[cfg(not(feature = "wasm"))]
 pub use self::secp256k1::*;
 
@@ -38,30 +31,3 @@ impl Default for SchnorrSignature {
         Self([0u8; 65])
     }
 }
-
-#[cfg(not(feature = "wasm"))]
-impl SchnorrSignature {
-    /// Attempt to convert a Schnorr signature to a WSTS Signature
-    pub fn to_wsts_signature(&self) -> Option<WSTSSignature> {
-        // TODO: update wsts to add a TryFrom for a [u8; 65] and a slice to a Signature
-        let point_bytes: [u8; 33] = self.0[..33].try_into().ok()?;
-        let scalar_bytes: [u8; 32] = self.0[33..].try_into().ok()?;
-        let point = Point::try_from(&Compressed::from(point_bytes)).ok()?;
-        let scalar = Scalar::from(scalar_bytes);
-        Some(WSTSSignature {
-            R: point,
-            z: scalar,
-        })
-    }
-}
-
-#[cfg(not(feature = "wasm"))]
-/// Convert a WSTS Signature to a SchnorrSignature
-impl From<&WSTSSignature> for SchnorrSignature {
-    fn from(signature: &WSTSSignature) -> Self {
-        let mut buf = [0u8; 65];
-        buf[..33].copy_from_slice(&signature.R.compress().data);
-        buf[33..].copy_from_slice(&signature.z.to_bytes());
-        SchnorrSignature(buf)
-    }
-}