change trait bounds for Arbitrary

crates/primitives/src/signature/super_signature.rs

@@ -23,8 +23,4 @@ pub trait ArbitrarySuperSig {}
 
 #[cfg(feature = "arbitrary")]
 pub trait ArbitrarySuperSig:
-arbitrary::Arbitrary
-+ proptest::arbitrary::Arbitrary<Parameters=(),Strategy=proptest::strategy::FilterMap<
-    <(U256, U256, Parity) as proptest::arbitrary::Arbitrary>::Strategy,
-    fn((U256, U256, Parity)) -> Option<Self>,
->> {}
+arbitrary::Arbitrary {}