Remove dependency on arithmetic and test in CI

Author: daxpedda

.github/workflows/elliptic-curve.yml

@@ -43,14 +43,15 @@ jobs:
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features digest
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features ecdh
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features hazmat
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features hash2curve
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features jwk
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features pem
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features pkcs8
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features sec1
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features serde
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features pkcs8,sec1
       - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features pem,pkcs8,sec1
-      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc,digest,ecdh,hazmat,jwk,pem,pkcs8,sec1,serde
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc,digest,ecdh,hazmat,hash2curv,jwk,pem,pkcs8,sec1,serde
 
   test:
     runs-on: ubuntu-latest

elliptic-curve/src/hash2curve/group_digest.rs

@@ -1,12 +1,12 @@
 use super::MapToCurve;
 use crate::{
     hash2field::{hash_to_field, ExpandMsg, FromOkm},
-    ProjectiveArithmetic, Result,
+    Result,
 };
 use group::cofactor::CofactorGroup;
 
 /// Adds hashing arbitrary byte sequences to a valid group element
-pub trait GroupDigest: ProjectiveArithmetic<ProjectivePoint = Self::Output> {
+pub trait GroupDigest {
     /// The field element representation for a group value with multiple elements
     type FieldElement: FromOkm + MapToCurve<Output = Self::Output> + Default + Copy;
     /// The resulting group element