Revert "fix clippy::match_like_matches_macro in either_or_both"

This reverts commit f598ad4.

src/either_or_both.rs

@@ -29,13 +29,19 @@ impl<A, B> EitherOrBoth<A, B> {
     /// If `Left`, return true. Otherwise, return false.
     /// Exclusive version of [`has_left`](EitherOrBoth::has_left).
     pub fn is_left(&self) -> bool {
-        matches!(self, Left(_))
+        match *self {
+            Left(_) => true,
+            _ => false,
+        }
     }
 
     /// If `Right`, return true. Otherwise, return false.
     /// Exclusive version of [`has_right`](EitherOrBoth::has_right).
     pub fn is_right(&self) -> bool {
-        matches!(self, Right(_))
+        match *self {
+            Right(_) => true,
+            _ => false,
+        }
     }
 
     /// If `Both`, return true. Otherwise, return false.