Remove an unnecessary span_delayed_bug in Resolver::valid_res_from_ribs.

`Resolver::report_error` always emits (this commit makes that clearer),
so the `span_delayed_bug` is unnecessary.

Author: nnethercote

compiler/rustc_resolve/src/diagnostics.rs

@@ -554,8 +554,12 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
     ///
     /// This takes the error provided, combines it with the span and any additional spans inside the
     /// error and emits it.
-    pub(crate) fn report_error(&mut self, span: Span, resolution_error: ResolutionError<'a>) {
-        self.into_struct_error(span, resolution_error).emit();
+    pub(crate) fn report_error(
+        &mut self,
+        span: Span,
+        resolution_error: ResolutionError<'a>,
+    ) -> ErrorGuaranteed {
+        self.into_struct_error(span, resolution_error).emit()
     }
 
     pub(crate) fn into_struct_error(

compiler/rustc_resolve/src/ident.rs

@@ -1056,7 +1056,6 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
         original_rib_ident_def: Ident,
         all_ribs: &[Rib<'a>],
     ) -> Res {
-        const CG_BUG_STR: &str = "min_const_generics resolve check didn't stop compilation";
         debug!("validate_res_from_ribs({:?})", res);
         let ribs = &all_ribs[rib_index + 1..];
 
@@ -1200,7 +1199,6 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
                                             }
                                         };
                                         self.report_error(span, error);
-                                        self.dcx().span_delayed_bug(span, CG_BUG_STR);
                                     }
 
                                     return Res::Err;