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

compiler/testData/codegen/light-analysis/fieldRename/constructorAndClassObject.txt

@@ -2,7 +2,6 @@ public final class ConstructorAndClassObjectKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }
 
-
 public final class Test {
     public final static field Companion: Test.Companion
     private final @org.jetbrains.annotations.NotNull field prop$1: java.lang.String
@@ -12,7 +11,6 @@ public final class Test {
     public final @org.jetbrains.annotations.NotNull method getProp(): java.lang.String
 }
 
-
 public final static class Test/Companion {
     inner class Test/Companion
     private method <init>(): void