relax bounds on many1 macro

Remove `Copy` from the bounds on the input type for `many1c`.

The corresponding bounds on `many1`,  which it delegates to, were weakened in
commit 9b1cfb0 -- perhaps accidentally, as that
commit otherwise only adds documentation.

Author: meiomorphism

src/multi/mod.rs

@@ -140,7 +140,7 @@ where
 #[cfg_attr(feature = "docsrs", doc(cfg(feature = "alloc")))]
 pub fn many1c<I, O, E, F>(input: I, f: F) -> IResult<I, Vec<O>, E>
 where
-  I: Clone + Copy + PartialEq,
+  I: Clone + PartialEq,
   F: Fn(I) -> IResult<I, O, E>,
   E: ParseError<I>,
 {