remove unused dependencies, fix inconsistencies, remove PropTypes

gatsby-node.js

@@ -1,30 +1,27 @@
 const _ = require("lodash")
-const Promise = require("bluebird")
-const path = require("path")
-const select = require(`unist-util-select`)
-const fs = require(`fs-extra`)
+const Promise = require('bluebird')
+const path = require('path')
 
 exports.createPages = ({ graphql, boundActionCreators }) => {
   const { createPage } = boundActionCreators
 
   return new Promise((resolve, reject) => {
-    const pages = []
     const blogPost = path.resolve("./src/templates/blog-post.js")
     resolve(
       graphql(
         `
-      {
-        allMarkdownRemark(limit: 1000) {
-          edges {
-            node {
-              frontmatter {
-                path
+          {
+            allMarkdownRemark(limit: 1000) {
+              edges {
+                node {
+                  frontmatter {
+                    path
+                  }
+                }
               }
             }
           }
-        }
-      }
-    `
+        `
       ).then(result => {
         if (result.errors) {
           console.log(result.errors)