OptionsLookAndFeel: deprecate undesired methods

It does not really make sense to let the caller populate the
UI which will be handled. (Actually, it does not make sense
to handle only a single UI at all; see subsequent commits.)

Author: ctrueden

src/main/java/org/scijava/ui/swing/options/OptionsLookAndFeel.java

@@ -78,18 +78,10 @@ public class OptionsLookAndFeel extends OptionsPlugin {
 
 	// -- OptionsLookAndFeel methods --
 
-	public UserInterface getUI() {
-		return ui;
-	}
-
 	public String getLookAndFeel() {
 		return lookAndFeel;
 	}
 
-	public void setUI(final UserInterface ui) {
-		this.ui = ui;
-	}
-
 	public void setLookAndFeel(final String lookAndFeel) {
 		this.lookAndFeel = lookAndFeel;
 	}
@@ -155,4 +147,15 @@ protected void initLookAndFeel() {
 		lookAndFeelItem.setChoices(lookAndFeelChoices);
 	}
 
+	// -- Deprecated methods --
+
+	@Deprecated
+	public UserInterface getUI() {
+		return ui;
+	}
+
+	@Deprecated
+	public void setUI(final UserInterface ui) {
+		this.ui = ui;
+	}
 }