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

compiler/testData/codegen/light-analysis/callableReference/function/nestedConstructorFromClass.txt

@@ -4,7 +4,6 @@ public final class A {
     public final method result(): int
 }
 
-
 public final static class A/Nested {
     private final field k: int
     private final field o: int
@@ -14,7 +13,6 @@ public final static class A/Nested {
     public final method getO(): int
 }
 
-
 public final class NestedConstructorFromClassKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }