remove unnecessary files

-import { prisma } from "../../utils";
-
-export default {
-  Category: {
-    messages: (parent) =>
-      prisma.category.findOne({ where: { id: parent.id } }).messages(),
-  },
-};

-type Mutation {
-  addCategory(name: String): Category!
-}

-import { prisma, isAuthenticated } from "../../../utils";
-import { NEW_CATEGORY } from "../../../topics";
-
-export default {
-  Mutation: {
-    addCategory: async (_, args, { request, pubsub }) => {
-      isAuthenticated(request);
-      const { name } = args;
-      const newCategory = await prisma.category.create({
-        data: {
-          name,
-        },
-      });
-      if (newCategory !== undefined) {
-        pubsub.publish(NEW_CATEGORY, { subCategory: newCategory });
-      }
-      return newCategory;
-    },
-  },
-};

-type Mutation {
-  deleteCategory(name: String!): Boolean!
-}

-import { prisma } from "../../../utils";
-
-export default {
-  Mutation: {
-    deleteCategory: async (_, args) => {
-      const { name } = args;
-      return prisma.category.delete({
-        where: {
-          name,
-        },
-      });
-    },
-  },
-};

-type Query {
-  getCategories: [Category]
-}

-import { prisma } from "../../../utils";
-
-export default {
-  Query: {
-    getCategories: async (_, __) => {
-      return prisma.category.findMany();
-    },
-  },
-};

-type Subscription {
-  subCategory: Category
-}

-import { NEW_CATEGORY } from "../../../topics";
-
-export default {
-  Subscription: {
-    subCategory: {
-      subscribe: async (_, __, { pubsub }) => {
-        return pubsub.asyncIterator(NEW_CATEGORY);
-      },
-    },
-  },
-};