Remove unnecessary cast

Clippy emits:

 warning: casting integer literal to `u8` is unnecessary

As suggested, remove the unnecessary cast.

Author: tcharding

src/interpreter/mod.rs

@@ -1163,7 +1163,7 @@ mod tests {
         let after = no_checks_ms(&format!("after({})", 1000));
         let older = no_checks_ms(&format!("older({})", 1000));
         //Hashes
-        let preimage = [0xab as u8; 32];
+        let preimage = [0xab; 32];
         let sha256_hash = sha256::Hash::hash(&preimage);
         let sha256 = no_checks_ms(&format!("sha256({})", sha256_hash));
         let hash256_hash = hash256::Hash::hash(&preimage);

src/miniscript/iter.rs

@@ -272,7 +272,7 @@ pub mod test {
             .map(|pk| hash160::Hash::hash(&pk.to_bytes()))
             .collect();
 
-        let preimage = vec![0xab as u8; 32];
+        let preimage = vec![0xab; 32];
         let sha256_hash = sha256::Hash::hash(&preimage);
         let sha256d_hash_rev = sha256d::Hash::hash(&preimage);
         let mut sha256d_hash_bytes = sha256d_hash_rev.into_inner();