Changes to be committed:
	deleted:    src/main/java/com/epam/airline/air/Airliner.java
	deleted:    src/main/java/com/epam/airline/air/Fighter.java
	deleted:    src/main/java/com/epam/airline/air/Hangar.java
	deleted:    src/main/java/com/epam/airline/air/Plane.java