Remove @Preview annotation

base/src/main/java/atlantafx/base/Preview.java

@@ -1,15 +0,0 @@
-package atlantafx.base;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-/**
- * Signifies that a public API or feature is not stable yet and can be changed
- * or removed in future releases.
- */
-@Retention(RetentionPolicy.CLASS)
-@Target({ElementType.METHOD, ElementType.TYPE})
-public @interface Preview {
-}

base/src/main/java/atlantafx/base/theme/CupertinoDark.java

@@ -2,12 +2,9 @@
 
 package atlantafx.base.theme;
 
-import atlantafx.base.Preview;
-
 /**
  * A theme based on <a href="https://developer.apple.com/design/">IOS</a> color palette.
  */
-@Preview
 public class CupertinoDark implements Theme {
 
     public CupertinoDark() {

base/src/main/java/atlantafx/base/theme/CupertinoLight.java

@@ -2,12 +2,9 @@
 
 package atlantafx.base.theme;
 
-import atlantafx.base.Preview;
-
 /**
  * A theme based on <a href="https://developer.apple.com/design/">IOS</a> color palette.
  */
-@Preview
 public class CupertinoLight implements Theme {
 
     public CupertinoLight() {

base/src/main/java/atlantafx/base/theme/Dracula.java

@@ -2,12 +2,9 @@
 
 package atlantafx.base.theme;
 
-import atlantafx.base.Preview;
-
 /**
  * A theme based on <a href="https://draculatheme.com">Dracula</a> color palette.
  */
-@Preview
 public class Dracula implements Theme {
 
     public Dracula() {