remove unused dependencies, fix inconsistencies, remove PropTypes

src/layouts/index.js

@@ -71,10 +71,4 @@ class Template extends React.Component {
   }
 }
 
-Template.propTypes = {
-  children: React.PropTypes.func,
-  location: React.PropTypes.object,
-  route: React.PropTypes.object,
-}
-
 export default Template

src/pages/index.js

@@ -13,7 +13,7 @@ class BlogIndex extends React.Component {
 
     return (
       <div>
-        <Helmet title={get(this, 'props.data.site.siteMetadata.title')} />
+        <Helmet title={siteTitle} />
         <Bio />
         {posts.map(post => {
           if (post.node.path !== '/404/') {
@@ -29,7 +29,7 @@ class BlogIndex extends React.Component {
                     style={{ boxShadow: 'none' }}
                     to={post.node.frontmatter.path}
                   >
-                    {post.node.frontmatter.title}
+                    {title}
                   </Link>
                 </h3>
                 <small>{post.node.frontmatter.date}</small>
@@ -43,10 +43,6 @@ class BlogIndex extends React.Component {
   }
 }
 
-BlogIndex.propTypes = {
-  route: React.PropTypes.object,
-}
-
 export default BlogIndex
 
 export const pageQuery = graphql`

src/templates/blog-post.js

@@ -1,6 +1,5 @@
 import React from 'react'
 import Helmet from 'react-helmet'
-import Link from 'gatsby-link'
 import get from 'lodash/get'
 
 import Bio from '../components/Bio'