Remove unpack! macro

lib/src/analysis/util.rs

@@ -1,33 +1 @@
-// Unpacks a pattern, or returns None.
-//
-// # Examples
-// You can use `unpack!` to unroll highly nested enums like this:
-// ```
-// enum Foo {
-//     A(Bar),
-//     B,
-// }
-//
-// enum Bar {
-//     C(Baz)
-// }
-//
-// struct Baz;
-//
-// fn get_bang(foo: Foo) -> Option<Baz> {
-//     unpack!(Foo::A(bar) = foo);
-//     unpack!(Bar::C(baz) = bar);
-//     baz
-// }
-// ```
-//
-macro_rules! unpack {
-    ($pat:pat = $val:expr) => {
-        let $pat = $val else {
-            return None;
-        };
-    };
-}
 
-// this is apparently how you make a macro publicly usable from this module
-pub(crate) use unpack;