[K/N] Remove redundant AbstractMutableMap.SimpleEntry

libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableMap.kt

@@ -18,28 +18,6 @@ public actual abstract class AbstractMutableMap<K, V> protected actual construct
     actual abstract override fun put(key: K, value: V): V?
 
 
-    /**
-     * A mutable [Map.Entry] shared by several [Map] implementations.
-     */
-    internal open class SimpleEntry<K, V>(override val key: K, value: V) : MutableMap.MutableEntry<K, V> {
-        constructor(entry: Map.Entry<K, V>) : this(entry.key, entry.value)
-
-        private var _value = value
-
-        override val value: V get() = _value
-
-        override fun setValue(newValue: V): V {
-            val oldValue = this._value
-            this._value = newValue
-            return oldValue
-        }
-
-        override fun hashCode(): Int = entryHashCode(this)
-        override fun toString(): String = entryToString(this)
-        override fun equals(other: Any?): Boolean = entryEquals(this, other)
-    }
-
-
     actual override fun putAll(from: Map<out K, V>) {
         for ((key, value) in from) {
             put(key, value)