src/main/java/seedu/address/model/ModelManager.java
@Override
    public void removeProgress(ID assignmentID, ID studentID) throws CommandException {
        CompositeID target = new CompositeID(assignmentID, studentID);
        progressAddressBook.remove(target);
    }
/**
     * Remove a progress by ID of assignment and ID of student.
     */
Remove a progress by ID of assignment and ID of student.
Remove a progress by ID of assignment and ID of student .
@Override
    public void removeProgress(ID assignmentID, ID studentID) throws CommandException {
        CompositeID target = new CompositeID(assignmentID, studentID);
        progressAddressBook.remove(target);
    }
@ Override public void removeProgress ( ID assignmentID , ID studentID ) throws CommandException { CompositeID target = new CompositeID ( assignmentID , studentID ) ; progressAddressBook . remove ( target ) ; }
Remove a progress by ID of assignment and ID of student.
Remove a progress by ID of assignment and ID of student .