Get rid of deprecated annotations and modifiers in stdlib (besides JS)

libraries/stdlib/test/collections/ArraysJVMTest.kt

@@ -5,7 +5,7 @@ import org.junit.Test as test
 
 class ArraysJVMTest {
 
-    test fun orEmptyNull() {
+    @test fun orEmptyNull() {
         val x: Array<String>? = null
         val y: Array<out String>? = null
         val xArray = x.orEmpty()
@@ -14,7 +14,7 @@ class ArraysJVMTest {
         expect(0) { yArray.size() }
     }
 
-    test fun orEmptyNotNull() {
+    @test fun orEmptyNotNull() {
         val x: Array<String>? = arrayOf("1", "2")
         val xArray = x.orEmpty()
         expect(2) { xArray.size() }