Light analysis tests: do not render empty lines between classes and in the beginning

compiler/testData/codegen/light-analysis/objects/kt1047.txt

@@ -2,7 +2,6 @@ public final class Kt1047Kt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }
 
-
 public class Test {
     public final static field Companion: Test.Companion
     private final static field hello: java.lang.String
@@ -11,7 +10,6 @@ public class Test {
     public method test(): void
 }
 
-
 public final static class Test/Companion {
     inner class Test/Companion
     private method <init>(): void