Update jdk version and remove debug print

.idea/misc.xml

@@ -3,7 +3,7 @@
   <component name="JavaScriptSettings">
     <option name="languageLevel" value="ES6" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_13" default="false" project-jdk-name="13" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_15" default="false" project-jdk-name="openjdk-15" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>

src/audio/AudioClient.java

@@ -44,8 +44,6 @@ public class AudioClient {
     Vector3 cameraPos = new Vector3(args.cameraX(), args.cameraY(), args.cameraZ());
     WorldObject object = new WorldObject(args.objFilePath());
 
-    System.out.println(args.isDefaultPosition());
-
     Camera camera = args.isDefaultPosition() ? new Camera(args.focalLength(), object)
         : new Camera(args.focalLength(), cameraPos);