servo: Merge #20030 - style: Remove useless code after #19994 (from emilio:useless-return-is-useless); r=nox

Source-Repo: https://github.com/servo/servo
Source-Revision: 3a42f6f988c4bfb1847ed8dbb7a0013c6b2e528a

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : 170dff8a60d7fdfb717f79d4bfa8b3a2ae3d93f7

servo/components/style/gecko/data.rs

@@ -148,14 +148,6 @@ impl PerDocumentStyleData {
     }
 }
 
-impl Drop for PerDocumentStyleDataImpl {
-    fn drop(&mut self) {
-        if !structs::GECKO_IS_NIGHTLY {
-            return
-        }
-    }
-}
-
 impl PerDocumentStyleDataImpl {
     /// Recreate the style data if the stylesheets have changed.
     pub fn flush_stylesheets<E>(