Remove not needed change

Author: aerooneqq

compiler/rustc_ast_lowering/src/errors.rs

@@ -523,15 +523,15 @@ pub(crate) struct UnionWithDefault {
 }
 
 #[derive(Diagnostic)]
-#[diag("encountered a cycle during delegation signature resolution")]
-pub(crate) struct CycleInDelegationSignatureResolution {
+#[diag("failed to resolve delegation callee")]
+pub(crate) struct UnresolvedDelegationCallee {
     #[primary_span]
     pub span: Span,
 }
 
 #[derive(Diagnostic)]
-#[diag("failed to resolve delegation callee")]
-pub(crate) struct UnresolvedDelegationCallee {
+#[diag("encountered a cycle during delegation signature resolution")]
+pub(crate) struct CycleInDelegationSignatureResolution {
     #[primary_span]
     pub span: Span,
 }