Remove extraneous constructors

server/package.json

server/src/models/AcademicYear.ts

server/src/models/Affiliation.ts

server/src/models/Assignment.ts

server/src/models/AssignmentExport.ts

server/src/models/AssignmentVersion.ts

server/src/models/Banner.ts

server/src/models/BaseModel.ts

server/src/models/CheckboxQuestion.ts

server/src/models/CheckboxQuestionAnswer.ts

server/src/models/CheckboxQuestionOption.ts

server/src/models/CodeAnnotation.ts

server/src/models/CommentingPDFAnnotation.ts

server/src/models/Course.ts

server/src/models/Enrollment.ts

server/src/models/Faculty.ts

server/src/models/File.ts

server/src/models/Group.ts

server/src/models/MultipleChoiceQuestion.ts

server/src/models/MultipleChoiceQuestionAnswer.ts