Add test or unused import removal suggestion with attributes.

Author: m-ou-se

src/test/ui/imports/unused-import-issue-87973.fixed

@@ -0,0 +1,8 @@
+// run-rustfix
+#![deny(unused_imports)]
+
+// Check that attributes get removed too. See #87973.
+
+//~^ ERROR unused import
+
+fn main() {}

src/test/ui/imports/unused-import-issue-87973.rs

@@ -0,0 +1,11 @@
+// run-rustfix
+#![deny(unused_imports)]
+
+// Check that attributes get removed too. See #87973.
+#[deprecated]
+#[allow(unsafe_code)]
+#[cfg(not(foo))]
+use std::fs;
+//~^ ERROR unused import
+
+fn main() {}

src/test/ui/imports/unused-import-issue-87973.stderr

@@ -0,0 +1,14 @@
+error: unused import: `std::fs`
+  --> $DIR/unused-import-issue-87973.rs:8:5
+   |
+LL | use std::fs;
+   |     ^^^^^^^
+   |
+note: the lint level is defined here
+  --> $DIR/unused-import-issue-87973.rs:2:9
+   |
+LL | #![deny(unused_imports)]
+   |         ^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+