fix error messages

Author: jdonszelmann

compiler/rustc_passes/messages.ftl

@@ -440,11 +440,6 @@ passes_invalid_macro_export_arguments = invalid `#[macro_export]` argument
 
 passes_invalid_macro_export_arguments_too_many_items = `#[macro_export]` can only take 1 or 0 arguments
 
-passes_lang_item_fn = {$name ->
-    [panic_impl] `#[panic_handler]`
-    *[other] `{$name}` lang item
-} function
-
 passes_lang_item_on_incorrect_target =
     `{$name}` lang item must be applied to a {$expected_target}
     .label = attribute should be applied to a {$expected_target}, not a {$actual_target}