Drop deprecated pre-1.0 API. Remove remaining usages in tests.

compiler/testData/codegen/box/delegatedProperty/privateSetterKPropertyIsNotMutable.kt

@@ -19,7 +19,7 @@ object Delegate {
             // OK
         }
 
-        property.accessible = true
+        property.isAccessible = true
         property.set(thiz, "")
 
         return "OK"

compiler/testData/codegen/box/reflection/mapping/syntheticFields.kt

@@ -3,7 +3,7 @@
 
 // WITH_REFLECT
 
-import kotlin.reflect.jvm.kotlin
+import kotlin.reflect.jvm.kotlinProperty
 
 enum class A {
     // There's a synthetic field "$VALUES" here
@@ -11,7 +11,7 @@ enum class A {
 
 fun box(): String {
     for (field in A::class.java.getDeclaredFields()) {
-        val prop = field.kotlin
+        val prop = field.kotlinProperty
         if (prop != null) return "Fail, property found: $prop"
     }
 

compiler/testData/codegen/box/reflection/properties/publicClassValAccessible.kt

@@ -3,7 +3,7 @@
 
 // WITH_REFLECT
 
-import kotlin.reflect.jvm.accessible
+import kotlin.reflect.jvm.isAccessible
 
 class Result {
     public val value: String = "OK"
@@ -11,7 +11,7 @@ class Result {
 
 fun box(): String {
     val p = Result::value
-    p.accessible = false
+    p.isAccessible = false
     // setAccessible(false) should have no effect on the accessibility of a public reflection object
     return p.get(Result())
 }

compiler/testData/codegen/boxAgainstJava/reflection/mapping/javaFields.kt

@@ -46,8 +46,8 @@ fun box(): String {
     assert(a.s == "def") { "Fail js access" }
 
     // Check that valid Kotlin reflection objects are created by those Field objects
-    val ki = ji.kotlin as KProperty1<J, Int>
-    val ks = js.kotlin as KMutableProperty1<J, String>
+    val ki = ji.kotlinProperty as KProperty1<J, Int>
+    val ks = js.kotlinProperty as KMutableProperty1<J, String>
     assert(ki.get(a) == 42) { "Fail ki get" }
     assert(ks.get(a) == "def") { "Fail ks get" }
     ks.set(a, "ghi")