JS: Remove unsupported Enumeration declaration.

Relates to #KT-7480

libraries/stdlib/src/kotlin/collections/Iterators.kt

@@ -3,11 +3,12 @@
 
 package kotlin.collections
 
-import java.util.Enumeration
+import java.util.*
 
 /**
  * Creates an [Iterator] for an [Enumeration], allowing to use it in `for` loops.
  */
+@kotlin.jvm.JvmVersion
 public operator fun <T> Enumeration<T>.iterator(): Iterator<T> = object : Iterator<T> {
     override fun hasNext(): Boolean = hasMoreElements()
 

libraries/stdlib/src/kotlin/collections/Sequences.kt

@@ -23,6 +23,7 @@ public fun <T> Iterator<T>.asSequence(): Sequence<T> = Sequence { this }.constra
 /**
  * Creates a sequence that returns all values from this enumeration. The sequence is constrained to be iterated only once.
  */
+@kotlin.jvm.JvmVersion
 @kotlin.internal.InlineOnly
 public inline fun<T> Enumeration<T>.asSequence(): Sequence<T> = this.iterator().asSequence()