Removed obsolete workaround for KT-1752.

libraries/stdlib/src/kotlin/beans/Listeners.kt

@@ -1,19 +0,0 @@
-package kotlin.beans
-
-import java.beans.*
-
-// TODO this file may be deleted when this issue is implemented
-// http://youtrack.jetbrains.com/issue/KT-1752
-
-/**
- * Creates a [[PropertyChangeListener]] for the given function for processing each [[PropertyChangeEvent]]
- */
-fun propertyChangeListener(fn: (PropertyChangeEvent) -> Unit): PropertyChangeListener = FunctionPropertyChangeListener(fn)
-
-private class FunctionPropertyChangeListener(val fn: (PropertyChangeEvent) -> Unit) : PropertyChangeListener {
-    public override fun propertyChange(e: PropertyChangeEvent) {
-        if (e != null) {
-            (fn)(e)
-        }
-    }
-}