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

compiler/testData/codegen/light-analysis/classes/classObjectWithPrivateGenericMember.txt

@@ -5,14 +5,12 @@ public final class C {
     public method <init>(): void
 }
 
-
 public final static class C/Companion {
     inner class C/Companion
     private method <init>(): void
     private final method create(): C
 }
 
-
 public final static class C/ZZZ {
     private final @org.jetbrains.annotations.NotNull field c: C
     inner class C/ZZZ
@@ -20,7 +18,6 @@ public final static class C/ZZZ {
     public final @org.jetbrains.annotations.NotNull method getC(): C
 }
 
-
 public final class ClassObjectWithPrivateGenericMemberKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }