[TEST] Update testdata due to dropped COMMON_COROUTINE_TEST directive

compiler/testData/codegen/box/contracts/kt39374.kt

@@ -2,10 +2,8 @@
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
 // WITH_COROUTINES
-// COMMON_COROUTINES_TEST
-
 import kotlin.contracts.*
-import COROUTINES_PACKAGE.*
+import kotlin.coroutines.*
 import helpers.*
 
 @ExperimentalContracts
@@ -31,4 +29,4 @@ val z: S = S.Z()
 @ExperimentalContracts
 fun box(): String = when (val w = z) {
     is S.Z -> runBlocking { w.f() }
-}
+}