Import FacultyAPI object instead of free-standing function getFaculty…

…SchedulesForYear

It turns out that you can no longer stub free-standing functions in Typescript 3.9.2+ according to this issue:

microsoft/TypeScript#38568
sinonjs/sinon#562

src/client/components/pages/Faculty/FacultyPage.tsx

@@ -8,7 +8,7 @@ import React, {
 import { LoadSpinner } from 'mark-one';
 import { FacultyResponseDTO } from 'common/dto/faculty/FacultyResponse.dto';
 import { MessageContext } from 'client/context';
-import { getFacultySchedulesForYear } from 'client/api';
+import { FacultyAPI } from 'client/api';
 import {
   AppMessage,
   MESSAGE_TYPE,
@@ -47,7 +47,7 @@ const FacultySchedule: FunctionComponent = function (): ReactElement {
    */
   useEffect((): void => {
     setFetching(true);
-    getFacultySchedulesForYear(acadYear)
+    FacultyAPI.getFacultySchedulesForYear(acadYear)
       .then((facultySchedules): void => {
         setFacultySchedules(facultySchedules[acadYear]);
       })