Remove bogus filterIsInstance* on strings.

libraries/stdlib/src/generated/_SpecialJVM.kt

@@ -345,13 +345,6 @@ public fun <T, R : T> Stream<T>.filterIsInstance(klass: Class<R>): Stream<T> {
     return FilteringStream(this, true, { klass.isInstance(it) })
 }
 
-/**
- * Returns a list containing all elements that are instances of specified class
- */
-public fun <R : Char> String.filterIsInstance(klass: Class<R>): List<R> {
-    return filterIsInstanceTo(ArrayList<R>(), klass)
-}
-
 /**
  * Appends all elements that are instances of specified class to the given *destination*
  */
@@ -376,14 +369,6 @@ public fun <T, C : MutableCollection<in R>, R : T> Stream<T>.filterIsInstanceTo(
     return destination
 }
 
-/**
- * Appends all elements that are instances of specified class to the given *destination*
- */
-public fun <C : MutableCollection<in R>, R : Char> String.filterIsInstanceTo(destination: C, klass: Class<R>): C {
-    for (element in this) if (klass.isInstance(element)) destination.add(element as R)
-    return destination
-}
-
 /**
  * Sorts array or range in array inplace
  */