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

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

@@ -12,7 +12,6 @@ public annotation class Ann {
     public abstract method str(): java.lang.String
 }
 
-
 public final class Foo {
     public final static field Companion: Foo.Companion
     public final static field b: byte
@@ -28,13 +27,11 @@ public final class Foo {
     public method <init>(): void
 }
 
-
 public final static class Foo/Companion {
     inner class Foo/Companion
     private method <init>(): void
 }
 
-
 public final class KotlinPropertyFromClassObjectAsParameterKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }