Resolve minor warnings

Platform/Apple/tools/jace/src/main/java/jace/JaceUIController.java

@@ -35,7 +35,6 @@ import javafx.beans.binding.NumberBinding;
 import javafx.beans.binding.When;
 import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.SimpleBooleanProperty;
-import javafx.beans.value.ObservableNumberValue;
 import javafx.event.EventHandler;
 import javafx.fxml.FXML;
 import javafx.geometry.Insets;

Platform/Apple/tools/jace/src/main/java/jace/library/MediaCache.java

@@ -415,6 +415,7 @@ public class MediaCache implements Serializable {
         }
     }
 
+    @SuppressWarnings("unused")
     private MediaFile resolveLocalCopy(MediaEntry e) {
         if (!e.isLocal) {
             e = findLocalEntry(e);
@@ -461,6 +462,7 @@ public class MediaCache implements Serializable {
         return tempDir;
     }
 
+    @SuppressWarnings("unused")
     private MediaFile convertTemporaryFileToLocal(MediaFile f) {
         throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
     }