Minor, remove obsolete directives and suppressions from contracts test data

compiler/testData/codegen/boxInline/contracts/propertyInitialization.kt

@@ -1,15 +1,13 @@
-// !LANGUAGE: +AllowContractsForCustomFunctions +UseCallsInPlaceEffect +ReadDeserializedContracts
 // !USE_EXPERIMENTAL: kotlin.contracts.ExperimentalContracts
-// IGNORE_BACKEND: JVM_IR
+// IGNORE_BACKEND: JVM_IR, JS_IR, NATIVE
 // IGNORE_BACKEND_MULTI_MODULE: JVM_IR
-// IGNORE_BACKEND: JS_IR
-// IGNORE_BACKEND: NATIVE
+
 // FILE: 1.kt
+
 package test
 
 import kotlin.contracts.*
 
-@Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")
 public inline fun <R> myrun(block: () -> R): R {
     contract {
         callsInPlace(block, InvocationKind.EXACTLY_ONCE)
@@ -32,4 +30,4 @@ class A {
 
 fun box(): String {
     return A().z
-}
+}