useless_attribute: allow clippy::disallowed_types

Closes https://github.com/rust-lang/rust-clippy/issues/12753

clippy_lints/src/attrs/useless_attribute.rs

@@ -35,6 +35,7 @@ pub(super) fn check(cx: &LateContext<'_>, item: &Item<'_>, attrs: &[Attribute])
                                             | "unsafe_removed_from_name"
                                             | "module_name_repetitions"
                                             | "single_component_path_imports"
+                                            | "disallowed_types"
                                     )
                                 })
                             {

tests/ui-toml/toml_disallowed_types/conf_disallowed_types.rs

@@ -40,3 +40,9 @@ fn main() {
     let _ = HashMap;
     let _: usize = 64_usize;
 }
+
+mod useless_attribute {
+    // Regression test for https://github.com/rust-lang/rust-clippy/issues/12753
+    #[allow(clippy::disallowed_types)]
+    use std::collections::HashMap;
+}