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

compiler/testData/codegen/light-analysis/reflection/modifiers/classes.txt

@@ -2,7 +2,6 @@ public final class ClassesKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }
 
-
 public abstract class S {
     public final static field Companion: S.Companion
     inner class S/Companion
@@ -12,13 +11,11 @@ public abstract class S {
     private method <init>(): void
 }
 
-
 public final static class S/Companion {
     inner class S/Companion
     private method <init>(): void
 }
 
-
 public final static class S/DataClass {
     private final field x: int
     inner class S/DataClass
@@ -32,14 +29,12 @@ public final static class S/DataClass {
     public method toString(): java.lang.String
 }
 
-
 public final class S/InnerClass {
     synthetic final field this$0: S
     inner class S/InnerClass
     public method <init>(p0: S): void
 }
 
-
 public final class S/NonCompanionObject {
     public final static field INSTANCE: S.NonCompanionObject
     inner class S/NonCompanionObject