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

compiler/testData/codegen/light-analysis/mangling/field.txt

@@ -4,7 +4,6 @@ public final class test/FieldKt {
     public final static method getNoMangling(): int
 }
 
-
 public final class test/Z {
     private field noMangling: int
     public method <init>(): void

compiler/testData/codegen/light-analysis/mangling/fun.txt

@@ -3,7 +3,6 @@ public final class test/FunKt {
     public final static method noMangling(): int
 }
 
-
 public final class test/Z {
     public method <init>(): void
     public final method mangled$test_module(): int

compiler/testData/codegen/light-analysis/mangling/internalOverride.txt

@@ -5,13 +5,11 @@ public class A {
     public @org.jetbrains.annotations.NotNull method test$test_module(): java.lang.String
 }
 
-
 public final class InternalOverrideKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
     public final static @org.jetbrains.annotations.NotNull method invokeOnA(@org.jetbrains.annotations.NotNull p0: A): java.lang.String
 }
 
-
 public final class Z {
     private final @org.jetbrains.annotations.NotNull field field: java.lang.String
     public method <init>(): void

compiler/testData/codegen/light-analysis/mangling/internalOverrideSuperCall.txt

@@ -5,12 +5,10 @@ public class A {
     public @org.jetbrains.annotations.NotNull method test$test_module(): java.lang.String
 }
 
-
 public final class InternalOverrideSuperCallKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }
 
-
 public final class Z {
     private final @org.jetbrains.annotations.NotNull field field: java.lang.String
     public method <init>(): void

compiler/testData/codegen/light-analysis/mangling/noOverrideWithJava.txt

@@ -3,7 +3,6 @@ public class A {
     public @org.jetbrains.annotations.NotNull method test$test_module(): java.lang.String
 }
 
-
 public final class TestKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }

compiler/testData/codegen/light-analysis/mangling/publicOverride.txt

@@ -5,13 +5,11 @@ public class A {
     public @org.jetbrains.annotations.NotNull method test$test_module(): java.lang.String
 }
 
-
 public final class PublicOverrideKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
     public final static @org.jetbrains.annotations.NotNull method invokeOnA(@org.jetbrains.annotations.NotNull p0: A): java.lang.String
 }
 
-
 public final class Z {
     private final @org.jetbrains.annotations.NotNull field field: java.lang.String
     public method <init>(): void

compiler/testData/codegen/light-analysis/mangling/publicOverrideSuperCall.txt

@@ -5,12 +5,10 @@ public class A {
     public @org.jetbrains.annotations.NotNull method test$test_module(): java.lang.String
 }
 
-
 public final class PublicOverrideSuperCallKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }
 
-
 public final class Z {
     private final @org.jetbrains.annotations.NotNull field field: java.lang.String
     public method <init>(): void