Fix 614: Unused variable, import, function or class

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: jacbn

src/app/components/elements/layout/SidebarLayout.tsx

@@ -3,7 +3,7 @@ import { Col, ColProps, RowProps, Input, Offcanvas, OffcanvasBody, OffcanvasHead
 import partition from "lodash/partition";
 import classNames from "classnames";
 import { AssignmentDTO, ContentSummaryDTO, IsaacConceptPageDTO, QuestionDTO, QuizAttemptDTO, RegisteredUserDTO } from "../../../../IsaacApiTypes";
-import { above, ACCOUNT_TAB, ACCOUNT_TABS, AUDIENCE_DISPLAY_FIELDS, below, BOARD_ORDER_NAMES, BoardCompletions, BoardCreators, BoardLimit, BoardSubjects, BoardViews, confirmThen, determineAudienceViews, filterAssignmentsByStatus, filterAudienceViewsByProperties, getDistinctAssignmentGroups, getDistinctAssignmentSetters, getHumanContext, getThemeFromContextAndTags, HUMAN_STAGES, HUMAN_SUBJECTS, ifKeyIsEnter, isAda, isDefined, PHY_NAV_SUBJECTS, siteSpecific, TAG_ID, tags, useDeviceSize } from "../../../services";
+import { above, ACCOUNT_TAB, ACCOUNT_TABS, AUDIENCE_DISPLAY_FIELDS, below, BOARD_ORDER_NAMES, BoardCompletions, BoardCreators, BoardLimit, BoardSubjects, BoardViews, confirmThen, determineAudienceViews, filterAssignmentsByStatus, filterAudienceViewsByProperties, getDistinctAssignmentGroups, getDistinctAssignmentSetters, getHumanContext, getThemeFromContextAndTags, HUMAN_STAGES, ifKeyIsEnter, isAda, isDefined, PHY_NAV_SUBJECTS, siteSpecific, TAG_ID, tags, useDeviceSize } from "../../../services";
 import { StageAndDifficultySummaryIcons } from "../StageAndDifficultySummaryIcons";
 import { selectors, useAppSelector } from "../../../state";
 import { Link, useHistory } from "react-router-dom";