Remove spurious comment line

Just a little tidyup since it was decided we didn't want these things
in the code base and this one must've slipped through the cracks

core/src/test/kotlin/net/corda/core/serialization/carpenter/ClassCarpenterTestUtils.kt

@@ -43,6 +43,3 @@ open class AmqpCarpenterBase {
     fun testName() = Thread.currentThread().stackTrace[2].methodName
     inline fun classTestName(clazz: String) = "${this.javaClass.name}\$${testName()}\$$clazz"
 }
-
-/**********************************************************************************************************************/
-