fix eslint errors in lstm and w2v

Author: cvalenzuela

src/LSTM/index.js

@@ -152,8 +152,6 @@ class LSTM {
   }
 }
 
-const LSTMGenerator = (modelPath = './', callback) => {
-  return new LSTM(modelPath, callback);
-};
+const LSTMGenerator = (modelPath = './', callback) => new LSTM(modelPath, callback);
 
 export default LSTMGenerator;

src/Word2vec/index.js

@@ -117,8 +117,6 @@ class Word2Vec {
   }
 }
 
-const word2vec = (model, cb) => {
-  return new Word2Vec(model, cb);
-};
+const word2vec = (model, cb) => new Word2Vec(model, cb);
 
 export default word2vec;

src/utils/callcallback.js

@@ -6,11 +6,11 @@
 export default function callCallback(promise, callback) {
   if (callback) {
     promise
-      .then(result => {
+      .then((result) => {
         callback(undefined, result);
         return result;
       })
-      .catch(error => {
+      .catch((error) => {
         callback(error);
       });
   }