Remove PatKind::Never

Author: Zalathar

compiler/rustc_pattern_analysis/src/rustc.rs

@@ -904,7 +904,7 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> {
                 print::write_slice_like(&mut s, &prefix, has_dot_dot, &suffix).unwrap();
                 PatKind::Print(s)
             }
-            Never if self.tcx.features().never_patterns => PatKind::Never,
+            Never if self.tcx.features().never_patterns => PatKind::Print("!".to_string()),
             Never | Wildcard | NonExhaustive | Hidden | PrivateUninhabited => {
                 PatKind::Print("_".to_string())
             }

compiler/rustc_pattern_analysis/src/rustc/print.rs

@@ -32,15 +32,12 @@ pub(crate) struct Pat<'tcx> {
 
 #[derive(Clone, Debug)]
 pub(crate) enum PatKind {
-    Never,
-
     Print(String),
 }
 
 impl<'tcx> fmt::Display for Pat<'tcx> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self.kind {
-            PatKind::Never => write!(f, "!"),
             PatKind::Print(ref string) => write!(f, "{string}"),
         }
     }