Finish removing middleman: ESD now replaces STAModel as the model

Author: JordanMartinez

richtextfx/src/main/java/org/fxmisc/richtext/model/EditableStyledDocument.java

@@ -10,8 +10,7 @@
 
 /**
  * Content model for {@link org.fxmisc.richtext.GenericStyledArea}. Implements edit operations
- * on styled text, but not worrying about additional aspects such as
- * caret or selection, which are handled by {@link StyledTextAreaModel}.
+ * on styled text, but not worrying about view aspects.
  */
 public interface EditableStyledDocument<PS, SEG, S> extends StyledDocument<PS, SEG, S> {