Fixed issues around wrong and unnecessary imports

types/markdown-it-lazy-headers/index.d.ts

@@ -4,7 +4,7 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.2
 
-import { MarkdownIt, Core, Token } from 'markdown-it';
+import { MarkdownIt } from 'markdown-it';
 
 declare function lazyheaders(md: MarkdownIt): void;
 

types/markdown-it-lazy-headers/markdown-it-lazy-headers-tests.ts

@@ -1,4 +1,4 @@
-import * as MarkdownIt from "markdown-it";
+import MarkdownIt = require("markdown-it");
 import lazyHeaders = require("markdown-it-lazy-headers");
 
 const md = new MarkdownIt();