Rollup merge of #137975 - Zalathar:needs-hir, r=compiler-errors

Remove unused `PpMode::needs_hir`

This method was added in #99360 to avoid an overzealous `span_delayed_bug` ICE in specific circumstances, but the only caller was subsequently removed in #136603, which presumably avoids the problem in a more principled way.

1 files changed, 0 insertions, 8 deletions

diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index 2f67660a46b..e62a8fc0fc3 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -2887,14 +2887,6 @@ impl PpMode {
             | StableMir => true,
         }
     }
-    pub fn needs_hir(&self) -> bool {
-        use PpMode::*;
-        match *self {
-            Source(_) | AstTree | AstTreeExpanded => false,
-
-            Hir(_) | HirTree | ThirTree | ThirFlat | Mir | MirCFG | StableMir => true,
-        }
-    }
 
     pub fn needs_analysis(&self) -> bool {
         use PpMode::*;