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

compiler/testData/codegen/light-analysis/dataClasses/toString/alreadyDeclared.txt

@@ -10,7 +10,6 @@ public final class A {
     public @org.jetbrains.annotations.NotNull method toString(): java.lang.String
 }
 
-
 public final class AlreadyDeclaredKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }

compiler/testData/codegen/light-analysis/dataClasses/toString/alreadyDeclaredWrongSignature.txt

@@ -11,12 +11,10 @@ public final class A {
     public final @org.jetbrains.annotations.NotNull method toString(@org.jetbrains.annotations.NotNull p0: java.lang.Object): java.lang.String
 }
 
-
 public final class AlreadyDeclaredWrongSignatureKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }
 
-
 public final class B {
     private final field x: int
     public method <init>(p0: int): void

compiler/testData/codegen/light-analysis/dataClasses/toString/arrayParams.txt

@@ -13,7 +13,6 @@ public final class A {
     public method toString(): java.lang.String
 }
 
-
 public final class ArrayParamsKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }

compiler/testData/codegen/light-analysis/dataClasses/toString/changingVarParam.txt

@@ -11,7 +11,6 @@ public final class A {
     public method toString(): java.lang.String
 }
 
-
 public final class ChangingVarParamKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }

compiler/testData/codegen/light-analysis/dataClasses/toString/genericParam.txt

@@ -10,7 +10,6 @@ public final class A {
     public method toString(): java.lang.String
 }
 
-
 public final class GenericParamKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }

compiler/testData/codegen/light-analysis/dataClasses/toString/mixedParams.txt

@@ -14,7 +14,6 @@ public final class A {
     public method toString(): java.lang.String
 }
 
-
 public final class MixedParamsKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }

compiler/testData/codegen/light-analysis/dataClasses/toString/unitComponent.txt

@@ -10,7 +10,6 @@ public final class A {
     public method toString(): java.lang.String
 }
 
-
 public final class UnitComponentKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }