Revert "gsk: Allow empty_line_after_outer_attr"

This reverts commit 672c388. The
required commit landed in the gir used for regenerating the files.

Author: A6GibKm

gsk4/src/lib.rs

@@ -24,7 +24,6 @@ macro_rules! skip_assert_initialized {
 
 #[allow(clippy::derived_hash_with_manual_eq)]
 #[allow(clippy::too_many_arguments)]
-#[allow(clippy::empty_line_after_outer_attr)]
 #[allow(unused_imports)]
 mod auto;