Address more review points

Author: dkhalanskyjb

core/common/src/format/migration/Unicode.kt renamed to core/common/src/format/Unicode.kt

@@ -5,8 +5,6 @@
 
 package kotlinx.datetime.internal
 
-import kotlin.native.concurrent.*
-
 internal fun Long.clampToInt(): Int =
         when {
             this > Int.MAX_VALUE -> Int.MAX_VALUE
@@ -182,7 +180,6 @@ internal fun multiplyAndAdd(d: Long, n: Long, r: Long): Long {
     return safeAdd(safeMultiply(md, n), mr)
 }
 
-@ThreadLocal
 internal val POWERS_OF_TEN = intArrayOf(
     1,
     10,
@@ -235,4 +232,10 @@ internal class DecimalFraction(
         append('.')
         append((denominator + (fractionalPart % denominator)).toString().removePrefix("1"))
     }
+
+    override fun hashCode(): Int {
+        var result = fractionalPart
+        result = 31 * result + digits
+        return result
+    }
 }

core/common/src/internal/math.kt

@@ -25,6 +25,3 @@ internal fun Char.toKotlinCode(): String = when (this) {
     '\'' -> "'\\''"
     else -> "'$this'"
 }
-
-internal fun<T> List<T>.toKotlinCode(elementRepr: T.() -> String): String =
-    joinToString(", ", "listOf(", ")") { it.elementRepr() }

core/common/src/internal/Repr.kt renamed to core/common/src/internal/toKotlinCode.kt

@@ -10,7 +10,6 @@ import kotlinx.datetime.format.*
 import kotlinx.datetime.serializers.UtcOffsetSerializer
 import kotlinx.serialization.Serializable
 import kotlin.math.abs
-import kotlin.native.concurrent.ThreadLocal
 
 @Serializable(with = UtcOffsetSerializer::class)
 public actual class UtcOffset private constructor(public actual val totalSeconds: Int) {
@@ -98,7 +97,6 @@ public actual class UtcOffset private constructor(public actual val totalSeconds
 
 }
 
-@ThreadLocal
 private var utcOffsetCache: MutableMap<Int, UtcOffset> = mutableMapOf(0 to UtcOffset.ZERO)
 
 @Suppress("ACTUAL_FUNCTION_WITH_DEFAULT_ARGUMENTS")

core/native/src/UtcOffset.kt

@@ -16,7 +16,7 @@ class ThreeTenBpLocalDateTest {
 
     @Test
     fun dayOfWeek() {
-        var dow = kotlinx.datetime.DayOfWeek.MONDAY
+        var dow = DayOfWeek.MONDAY
         for (month in 1..12) {
             val length = month.monthLength(false)
             for (i in 1..length) {