Fixup some unused imports

extensions/ql-vscode/src/view/data-flow-paths/DataFlowPathsView.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useState } from "react";
+import { useState } from "react";
 import type { ToDataFlowPathsMessage } from "../../common/interface-types";
 import type { DataFlowPaths as DataFlowPathsDomainModel } from "../../variant-analysis/shared/data-flow-paths";
 import { DataFlowPaths } from "./DataFlowPaths";

extensions/ql-vscode/src/view/method-modeling/MethodModelingView.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useMemo, useState } from "react";
+import { useMemo, useState } from "react";
 import { MethodModeling } from "./MethodModeling";
 import { getModelingStatus } from "../../model-editor/shared/modeling-status";
 import type { Method } from "../../model-editor/method";

extensions/ql-vscode/src/view/model-alerts/ModelAlerts.tsx

@@ -1,4 +1,4 @@
-import { useCallback, useEffect, useMemo, useState } from "react";
+import { useCallback, useMemo, useState } from "react";
 import { styled } from "styled-components";
 import { ModelAlertsHeader } from "./ModelAlertsHeader";
 import type { ModelAlertsViewState } from "../../model-editor/shared/view-state";