Editor: Remove unused Class Name field from Create Script dialog

modules/gdscript/editor/script_templates/RichTextEffect/default.gd

@@ -1,15 +1,16 @@
 # meta-description: Base template for rich text effects
 
 @tool
-class_name _CLASS_
+# Having a class name is handy for picking the effect in the Inspector.
+class_name RichText_CLASS_
 extends _BASE_
 
 
 # To use this effect:
 # - Enable BBCode on a RichTextLabel.
 # - Register this effect on the label.
-# - Use [_CLASS_ param=2.0]hello[/_CLASS_] in text.
-var bbcode := "_CLASS_"
+# - Use [_CLASS_SNAKE_CASE_ param=2.0]hello[/_CLASS_SNAKE_CASE_] in text.
+var bbcode := "_CLASS_SNAKE_CASE_"
 
 
 func _process_custom_fx(char_fx: CharFXTransform) -> bool: