Remove useless use of vec!

Clippy warns of useless use of `vec!` macro, remove it.

Author: tcharding

src/util/sighash.rs

@@ -1002,9 +1002,9 @@ mod tests {
 
     #[test]
     fn test_annex_errors() {
-        assert_eq!(Annex::new(&vec![]), Err(Error::WrongAnnex));
-        assert_eq!(Annex::new(&vec![0x51]), Err(Error::WrongAnnex));
-        assert_eq!(Annex::new(&vec![0x51, 0x50]), Err(Error::WrongAnnex));
+        assert_eq!(Annex::new(&[]), Err(Error::WrongAnnex));
+        assert_eq!(Annex::new(&[0x51]), Err(Error::WrongAnnex));
+        assert_eq!(Annex::new(&[0x51, 0x50]), Err(Error::WrongAnnex));
     }
 
     fn test_taproot_sighash(

src/util/taproot.rs

@@ -1262,9 +1262,9 @@ mod test {
          *   3            55 51
          */
 
-        for (script, length) in vec![("51", 3), ("52", 2), ("53", 2), ("54", 2), ("55", 3)] {
+        for (script, length) in [("51", 3), ("52", 2), ("53", 2), ("54", 2), ("55", 3)].iter() {
             assert_eq!(
-                length,
+                *length,
                 tree_info
                     .script_map
                     .get(&(Script::from_hex(script).unwrap(), LeafVersion::TapScript))