KT-53778 Remove experimental annotations from open ranges

libraries/stdlib/unsigned/src/kotlin/UIntRange.kt

@@ -16,14 +16,13 @@ import kotlin.internal.*
  */
 @SinceKotlin("1.5")
 @WasExperimental(ExperimentalUnsignedTypes::class)
-@OptIn(ExperimentalStdlibApi::class)
 public class UIntRange(start: UInt, endInclusive: UInt) : UIntProgression(start, endInclusive, 1), ClosedRange<UInt>, OpenEndRange<UInt> {
     override val start: UInt get() = first
     override val endInclusive: UInt get() = last
     
-    @SinceKotlin("1.7")
-    @ExperimentalStdlibApi
     @Deprecated("Can throw an exception when it's impossible to represent the value with UInt type, for example, when the range includes MAX_VALUE. It's recommended to use 'endInclusive' property that doesn't throw.")
+    @SinceKotlin("1.9")
+    @WasExperimental(ExperimentalStdlibApi::class)
     override val endExclusive: UInt get() {
         if (last == UInt.MAX_VALUE) error("Cannot return the exclusive upper bound of a range that includes MAX_VALUE.")
         return last + 1u