feat: removal of emailExists socket listener

public/src/client/register.js

@@ -131,22 +131,8 @@ define('forum/register', [
 			return callback();
 		}
 
-		socket.emit('user.emailExists', {
-			email: email,
-		}, function (err, exists) {
-			if (err) {
-				app.alertError(err.message);
-				return callback();
-			}
-
-			if (exists) {
-				showError(email_notify, '[[error:email-taken]]');
-			} else {
-				showSuccess(email_notify, successIcon);
-			}
-
-			callback();
-		});
+		showSuccess(email_notify, successIcon);
+		callback();
 	}
 
 	function validateUsername(username, callback) {

src/socket.io/user.js

@@ -43,13 +43,6 @@ SocketUser.deleteAccount = async function (socket, data) {
 	await api.users.deleteAccount(socket, data);
 };
 
-SocketUser.emailExists = async function (socket, data) {
-	if (!data || !data.email) {
-		throw new Error('[[error:invalid-data]]');
-	}
-	return await user.email.exists(data.email);
-};
-
 SocketUser.emailConfirm = async function (socket) {
 	if (!socket.uid) {
 		throw new Error('[[error:no-privileges]]');

test/user.js

@@ -1766,29 +1766,6 @@ describe('User', () => {
 			meta.config.allowAccountDeletion = oldValue;
 		});
 
-		it('should fail if data is invalid', (done) => {
-			socketUser.emailExists({ uid: testUid }, null, (err) => {
-				assert.equal(err.message, '[[error:invalid-data]]');
-				done();
-			});
-		});
-
-		it('should return true if email exists', (done) => {
-			socketUser.emailExists({ uid: testUid }, { email: 'john@example.com' }, (err, exists) => {
-				assert.ifError(err);
-				assert(exists);
-				done();
-			});
-		});
-
-		it('should return false if email does not exist', (done) => {
-			socketUser.emailExists({ uid: testUid }, { email: 'does@not.exist' }, (err, exists) => {
-				assert.ifError(err);
-				assert(!exists);
-				done();
-			});
-		});
-
 		it('should error if requireEmailConfirmation is disabled', (done) => {
 			socketUser.emailConfirm({ uid: testUid }, {}, (err) => {
 				assert.equal(err.message, '[[error:email-confirmations-are-disabled]]');