chore: remove unused FE files and deps (#720)

* remove unused FE files and deps

* update lock file

frontend/src/contexts/create-pr-dialog-context.tsx

@@ -1,71 +0,0 @@
-import {
-  createContext,
-  useContext,
-  useState,
-  useCallback,
-  ReactNode,
-  useMemo,
-} from 'react';
-import type { TaskAttempt, TaskWithAttemptStatus } from 'shared/types';
-
-interface CreatePRDialogData {
-  attempt: TaskAttempt;
-  task: TaskWithAttemptStatus;
-  projectId: string;
-}
-
-interface CreatePRDialogState {
-  isOpen: boolean;
-  data: CreatePRDialogData | null;
-  showCreatePRDialog: (data: CreatePRDialogData) => void;
-  closeCreatePRDialog: () => void;
-}
-
-const CreatePRDialogContext = createContext<CreatePRDialogState | null>(null);
-
-interface CreatePRDialogProviderProps {
-  children: ReactNode;
-}
-
-export function CreatePRDialogProvider({
-  children,
-}: CreatePRDialogProviderProps) {
-  const [isOpen, setIsOpen] = useState(false);
-  const [data, setData] = useState<CreatePRDialogData | null>(null);
-
-  const showCreatePRDialog = useCallback((data: CreatePRDialogData) => {
-    setData(data);
-    setIsOpen(true);
-  }, []);
-
-  const closeCreatePRDialog = useCallback(() => {
-    setIsOpen(false);
-    setData(null);
-  }, []);
-
-  const value = useMemo(
-    () => ({
-      isOpen,
-      data,
-      showCreatePRDialog,
-      closeCreatePRDialog,
-    }),
-    [isOpen, data, showCreatePRDialog, closeCreatePRDialog]
-  );
-
-  return (
-    <CreatePRDialogContext.Provider value={value}>
-      {children}
-    </CreatePRDialogContext.Provider>
-  );
-}
-
-export function useCreatePRDialog(): CreatePRDialogState {
-  const context = useContext(CreatePRDialogContext);
-  if (!context) {
-    throw new Error(
-      'useCreatePRDialog must be used within a CreatePRDialogProvider'
-    );
-  }
-  return context;
-}