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

compiler/testData/codegen/light-analysis/innerNested/protectedNestedClass.txt

@@ -3,14 +3,12 @@ public abstract class a/A {
     public method <init>(): void
 }
 
-
 protected final static class a/A/C {
     inner class a/A/C
     public method <init>(): void
     public final @org.jetbrains.annotations.NotNull method result(): java.lang.String
 }
 
-
 public final class b/B {
     private final @org.jetbrains.annotations.NotNull field c: a.A.C
     public method <init>(): void
@@ -18,7 +16,6 @@ public final class b/B {
     public final @org.jetbrains.annotations.NotNull method getResult(): java.lang.String
 }
 
-
 public final class b/BKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }