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

compiler/testData/codegen/light-analysis/annotations/defaultParameterValues.txt

@@ -17,7 +17,6 @@ public annotation class Ann {
 @java.lang.annotation.Retention
 public annotation class Ann2
 
-
 public final class DefaultParameterValuesKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }
@@ -27,7 +26,6 @@ public final class MyClass {
     public method <init>(): void
 }
 
-
 public enum class MyEnum {
     public final static field A: MyEnum
     protected method <init>(p0: java.lang.String, p1: int): void