Remove redundant @OptIn

kotlin-native/Interop/Runtime/src/main/kotlin/kotlinx/cinterop/Utils.kt

@@ -571,7 +571,6 @@ public fun CPointer<IntVar>.toKStringFromUtf32(): String {
  *
  * Malformed byte sequences are replaced by the replacement char `\uFFFD`.
  */
-@OptIn(ExperimentalStdlibApi::class)
 @SinceKotlin("1.3")
 public fun ByteArray.toKString() : String {
     val realEndIndex = realEndIndex(this, 0, this.size)
@@ -590,7 +589,6 @@ public fun ByteArray.toKString() : String {
  * @throws IllegalArgumentException if [startIndex] is greater than [endIndex].
  * @throws CharacterCodingException if the byte array contains malformed UTF-8 byte sequence and [throwOnInvalidSequence] is true.
  */
-@OptIn(ExperimentalStdlibApi::class)
 @SinceKotlin("1.3")
 public fun ByteArray.toKString(
         startIndex: Int = 0,

kotlin-native/runtime/src/main/kotlin/kotlin/collections/ArrayList.kt

@@ -141,7 +141,6 @@ actual class ArrayList<E> private constructor(
             array = array.copyOfUninitializedElements(length)
     }
 
-    @OptIn(ExperimentalStdlibApi::class)
     final actual fun ensureCapacity(minCapacity: Int) {
         if (backing != null) throw IllegalStateException() // just in case somebody casts subList to ArrayList
         if (minCapacity > array.size) {

kotlin-native/runtime/src/main/kotlin/kotlin/collections/HashMap.kt

@@ -470,10 +470,8 @@ actual class HashMap<K, V> private constructor(
         private const val INITIAL_MAX_PROBE_DISTANCE = 2
         private const val TOMBSTONE = -1
 
-        @OptIn(ExperimentalStdlibApi::class)
         private fun computeHashSize(capacity: Int): Int = (capacity.coerceAtLeast(1) * 3).takeHighestOneBit()
 
-        @OptIn(ExperimentalStdlibApi::class)
         private fun computeShift(hashSize: Int): Int = hashSize.countLeadingZeroBits() + 1
     }
 

libraries/stdlib/js/src/kotlin/text/StringBuilderJs.kt

@@ -108,7 +108,6 @@ public actual class StringBuilder actual constructor(content: String) : Appendab
     @SinceKotlin("1.4")
     @WasExperimental(ExperimentalStdlibApi::class)
     actual fun append(value: CharArray): StringBuilder {
-        @OptIn(ExperimentalStdlibApi::class)
         string += value.concatToString()
         return this
     }
@@ -238,7 +237,6 @@ public actual class StringBuilder actual constructor(content: String) : Appendab
     actual fun insert(index: Int, value: CharArray): StringBuilder {
         AbstractList.checkPositionIndex(index, length)
 
-        @OptIn(ExperimentalStdlibApi::class)
         string = string.substring(0, index) + value.concatToString() + string.substring(index)
         return this
     }
@@ -492,7 +490,6 @@ public actual class StringBuilder actual constructor(content: String) : Appendab
     @SinceKotlin("1.4")
     @WasExperimental(ExperimentalStdlibApi::class)
     public fun appendRange(value: CharArray, startIndex: Int, endIndex: Int): StringBuilder {
-        @OptIn(ExperimentalStdlibApi::class)
         string += value.concatToString(startIndex, endIndex)
         return this
     }
@@ -534,7 +531,6 @@ public actual class StringBuilder actual constructor(content: String) : Appendab
     public fun insertRange(index: Int, value: CharArray, startIndex: Int, endIndex: Int): StringBuilder {
         AbstractList.checkPositionIndex(index, this.length)
 
-        @OptIn(ExperimentalStdlibApi::class)
         string = string.substring(0, index) + value.concatToString(startIndex, endIndex) + string.substring(index)
         return this
     }

libraries/stdlib/js/src/kotlin/text/utf8Encoding.kt

@@ -6,7 +6,6 @@
 package kotlin.text
 
 /** Returns the negative [size] if [throwOnMalformed] is false, throws [CharacterCodingException] otherwise. */
-@OptIn(ExperimentalStdlibApi::class)
 private fun malformed(size: Int, index: Int, throwOnMalformed: Boolean): Int {
     if (throwOnMalformed) throw CharacterCodingException("Malformed sequence starting at ${index - 1}")
     return -size

libraries/stdlib/jvm/src/kotlin/collections/builders/MapBuilder.kt

@@ -436,10 +436,8 @@ internal class MapBuilder<K, V> private constructor(
         private const val INITIAL_MAX_PROBE_DISTANCE = 2
         private const val TOMBSTONE = -1
 
-        @OptIn(ExperimentalStdlibApi::class)
         private fun computeHashSize(capacity: Int): Int = (capacity.coerceAtLeast(1) * 3).takeHighestOneBit()
 
-        @OptIn(ExperimentalStdlibApi::class)
         private fun computeShift(hashSize: Int): Int = hashSize.countLeadingZeroBits() + 1
     }
 

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

@@ -140,7 +140,7 @@ public fun <T> Sequence<T>.shuffled(random: Random): Sequence<T> = sequence<T> {
     val buffer = toMutableList()
     while (buffer.isNotEmpty()) {
         val j = random.nextInt(buffer.size)
-        val last = @OptIn(ExperimentalStdlibApi::class) buffer.removeLast()
+        val last = buffer.removeLast()
         val value = if (j < buffer.size) buffer.set(j, last) else last
         yield(value)
     }

libraries/stdlib/src/kotlin/random/Random.kt

@@ -369,7 +369,6 @@ public fun Random.nextLong(range: LongRange): Long = when {
 internal expect fun defaultPlatformRandom(): Random
 internal expect fun doubleFromParts(hi26: Int, low27: Int): Double
 
-@OptIn(ExperimentalStdlibApi::class)
 internal fun fastLog2(value: Int): Int = 31 - value.countLeadingZeroBits()
 
 /** Takes upper [bitCount] bits (0..32) from this number. */

libraries/stdlib/src/kotlin/text/Strings.kt

@@ -500,7 +500,6 @@ public fun String.substringAfterLast(delimiter: String, missingDelimiterValue: S
  * @param startIndex the index of the first character to be replaced.
  * @param endIndex the index of the first character after the replacement to keep in the string.
  */
-@OptIn(ExperimentalStdlibApi::class)
 public fun CharSequence.replaceRange(startIndex: Int, endIndex: Int, replacement: CharSequence): CharSequence {
     if (endIndex < startIndex)
         throw IndexOutOfBoundsException("End index ($endIndex) is less than start index ($startIndex).")
@@ -546,7 +545,6 @@ public inline fun String.replaceRange(range: IntRange, replacement: CharSequence
  *
  * [endIndex] is not included in the removed part.
  */
-@OptIn(ExperimentalStdlibApi::class)
 public fun CharSequence.removeRange(startIndex: Int, endIndex: Int): CharSequence {
     if (endIndex < startIndex)
         throw IndexOutOfBoundsException("End index ($endIndex) is less than start index ($startIndex).")

libraries/stdlib/src/kotlin/time/Duration.kt

@@ -725,7 +725,6 @@ public value class Duration internal constructor(private val rawValue: Long) : C
      *
      * @sample samples.time.Durations.toIsoString
      */
-    @OptIn(ExperimentalStdlibApi::class)
     public fun toIsoString(): String = buildString {
         if (isNegative()) append('-')
         append("PT")