Revert "[wip] Implement like activity"

This reverts commit 7da1913964.

src/remote/activitypub/act/like.ts

@@ -1,48 +0,0 @@
-import { MongoError } from 'mongodb';
-import Post from '../../../models/post';
-import Reaction from '../../../models/post-reaction';
-import config from '../../../config';
-import queue from '../../../queue';
-
-export default async (actor, activity) => {
-	const prefix = config.url + '/posts';
-	const id = activity.object.id || activity.object;
-	let reaction;
-
-	if (!id.startsWith(prefix)) {
-		return null;
-	}
-
-	const postId = id.slice(prefix.length);
-
-	const post = await Post.findOne({ _id: postId });
-	if (post === null) {
-		throw new Error();
-	}
-
-	try {
-		reaction = await Reaction.insert({
-			createdAt: new Date(),
-			postId,
-			userId: actor._id,
-			reaction: 'pudding'
-		});
-	} catch (exception) {
-		// duplicate key error
-		if (exception instanceof MongoError && exception.code === 11000) {
-			return null;
-		}
-
-		throw exception;
-	}
-
-	await new Promise((resolve, reject) => {
-		queue.create('http', { type: 'like', reaction: reaction._id }).save(error => {
-			if (error) {
-				reject(error);
-			} else {
-				resolve(null);
-			}
-		});
-	});
-};