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

compiler/testData/codegen/light-analysis/diagnostics/functions/tailRecursion/defaultArgsOverridden.txt

@@ -4,13 +4,11 @@ public class A {
     public @org.jetbrains.annotations.NotNull method foo(@org.jetbrains.annotations.NotNull p0: java.lang.String): java.lang.String
 }
 
-
 public final class B {
     public method <init>(): void
     public @org.jetbrains.annotations.NotNull method foo(@org.jetbrains.annotations.NotNull p0: java.lang.String): java.lang.String
 }
 
-
 public final class DefaultArgsOverriddenKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }

compiler/testData/codegen/light-analysis/diagnostics/functions/tailRecursion/labeledThisReferences.txt

@@ -5,7 +5,6 @@ public final class B {
     public final @org.jetbrains.annotations.NotNull method makeC(): B.C
 }
 
-
 public final class B/C {
     synthetic final field this$0: B
     inner class B/C
@@ -14,7 +13,6 @@ public final class B/C {
     public final method h2(@org.jetbrains.annotations.NotNull p0: java.lang.Object): void
 }
 
-
 public final class LabeledThisReferencesKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }

compiler/testData/codegen/light-analysis/diagnostics/functions/tailRecursion/thisReferences.txt

@@ -5,7 +5,6 @@ public final class A {
     public final method f3(@org.jetbrains.annotations.NotNull p0: A): void
 }
 
-
 public final class ThisReferencesKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }