Adding test for the remove time operator test

modeling/AVATAR/CoffeeMachine_Avatar.xml

src/main/java/cli/Action.java

ttool/src/test/java/cli/CLIAvatarModelCheckerTest.java

.../src/test/resources/cli/input/scriptmodelchecker_s_notime

ttool/src/test/resources/cli/input/scriptmodelchecker_s_time