[LC][tests] drop outdated '//RELEASE_COROUTINE_NEEDED' directive

compiler/testData/asJava/lightClasses/lightClassByPsi/coroutines.kt

@@ -1,4 +1,3 @@
-//RELEASE_COROUTINE_NEEDED
 class Foo {
   suspend fun doSomething(foo: Foo): Bar { TODO() }
 }

compiler/testData/asJava/lightClasses/lightClassByPsi/facades/coroutines.kt

@@ -1,4 +1,3 @@
-//RELEASE_COROUTINE_NEEDED
 suspend fun doSomething(foo: String): Int { TODO() }
 
 fun <T> async(block: suspend () -> T) { TODO() }