1 files changed, 0 insertions, 64 deletions
diff --git a/components/style/rule_tree/mod.rs b/components/style/rule_tree/mod.rs
index 113fa9cb9bb..ddac85a8075 100644
--- a/components/style/rule_tree/mod.rs
+++ b/components/style/rule_tree/mod.rs
@@ -136,29 +136,6 @@ impl StyleSource {
         let _ = write!(writer, "  -> {:?}", self.read(guard).declarations());
     }
 
-    // This is totally unsafe, should be removed when we figure out the cause of
-    // bug 1607553.
-    #[cfg(feature = "gecko")]
-    unsafe fn dump_unchecked<W: Write>(&self, writer: &mut W) {
-        if let Some(ref rule) = self.0.as_first() {
-            let rule = rule.read_unchecked();
-            let _ = write!(writer, "{:?}", rule.selectors);
-        }
-        let _ = write!(writer, "  -> {:?}", self.read_unchecked().declarations());
-    }
-
-    // This is totally unsafe, should be removed when we figure out the cause of
-    // bug 1607553.
-    #[inline]
-    #[cfg(feature = "gecko")]
-    unsafe fn read_unchecked(&self) -> &PropertyDeclarationBlock {
-        let block: &Locked<PropertyDeclarationBlock> = match self.0.borrow() {
-            ArcUnionBorrow::First(ref rule) => &rule.get().read_unchecked().block,
-            ArcUnionBorrow::Second(ref block) => block.get(),
-        };
-        block.read_unchecked()
-    }
-
     /// Read the style source guard, and obtain thus read access to the
     /// underlying property declaration block.
     #[inline]
@@ -1742,47 +1719,6 @@ impl Drop for StrongRuleNode {
             return;
         }
 
-        #[cfg(feature = "gecko")]
-        #[inline(always)]
-        fn assert_on_release() -> bool {
-            crate::gecko_bindings::structs::GECKO_IS_NIGHTLY
-        }
-
-        #[cfg(feature = "servo")]
-        fn assert_on_release() -> bool {
-            false
-        }
-
-        if cfg!(debug_assertions) || assert_on_release() {
-            let children = node.children.read();
-            if !children.is_empty() {
-                let mut crash_str = vec![];
-
-                #[cfg(feature = "gecko")]
-                unsafe {
-                    // Try to unsafely collect some information of this before
-                    // crashing the process.
-                    if let Some(ref s) = node.source {
-                        s.dump_unchecked(&mut crash_str);
-                        crash_str.push(b'\n');
-                    }
-                    children.each(|child| {
-                        (*child.ptr())
-                            .source
-                            .as_ref()
-                            .unwrap()
-                            .dump_unchecked(&mut crash_str);
-                        crash_str.push(b'\n');
-                    });
-                }
-
-                panic!(
-                    "Children left in the rule tree on drop: {}",
-                    String::from_utf8_lossy(&crash_str).trim()
-                );
-            }
-        }
-
         if node.parent.is_none() {
             debug!("Dropping root node!");
             // The free list should be null by this point