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

compiler/testData/codegen/light-analysis/objects/kt1186.txt

@@ -9,7 +9,6 @@ public enum class Color {
     public static method values(): Color[]
 }
 
-
 public enum class Direction {
     public final static field EAST: Direction
     public final static field NORTH: Direction
@@ -20,7 +19,6 @@ public enum class Direction {
     public static method values(): Direction[]
 }
 
-
 public final class Kt1186Kt {
     public final static method bar(@org.jetbrains.annotations.NotNull p0: Color): int
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String