refactor: remove unnecessary stuff

Author: alexander-akait

src/parser.js

@@ -813,13 +813,6 @@ export default class Parser {
             this.position ++;
             let current = this.content();
             word += current;
-            if (current.lastIndexOf('\\') === current.length - 1) {
-                let next = this.nextToken;
-                if (next && next[TOKEN.TYPE] === tokens.space) {
-                    word += this.requiredSpace(this.content(next));
-                    this.position ++;
-                }
-            }
             nextToken = this.nextToken;
         }
         const hasClass = indexesOf(word, '.').filter(i => word[i - 1] !== '\\');