Downgrade dashmap to 3.11.7

Fixes kube-rs#286

kube-runtime/Cargo.toml

@@ -22,7 +22,7 @@ smallvec = "1.4.0"
 pin-project = "0.4.16"
 tokio = { version = "0.2.21", features = ["time"] }
 snafu = { version = "0.6.8", features = ["futures"] }
-dashmap = "4.0.0-rc6"
+dashmap = "3.11.7"
 
 [features]
 default = ["native-tls"]

kube-runtime/src/reflector/store.rs

@@ -83,14 +83,4 @@ impl<K: 'static + Clone + Resource> Store<K> {
     pub fn state(&self) -> Vec<K> {
         self.store.iter().map(|eg| eg.value().clone()).collect()
     }
-
-    /// Return a guarded dashmap iterator of our state
-    ///
-    /// This creates an iterator over all entries in the map.
-    /// This does not take a snapshot of the map and thus changes during the lifetime
-    /// of the iterator may or may not become visible in the iterator.
-    #[must_use]
-    pub fn iter(&self) -> dashmap::Iter<ObjectRef<K>, K> {
-        self.store.iter()
-    }
 }