Remove unused fetch polyfills, querystring, require-json. Move glob to dev-dep

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

package.json

@@ -72,12 +72,10 @@
     "fuse.js": "^2.2.0",
     "gemini-scrollbar": "github:matrix-org/gemini-scrollbar#91e1e566",
     "gfm.css": "^1.1.1",
-    "glob": "^5.0.14",
     "glob-to-regexp": "^0.4.1",
     "highlight.js": "^9.15.8",
     "html-entities": "^1.2.1",
     "is-ip": "^2.0.0",
-    "isomorphic-fetch": "^2.2.1",
     "linkifyjs": "^2.1.6",
     "lodash": "^4.17.14",
     "lolex": "4.2",
@@ -88,7 +86,6 @@
     "prop-types": "^15.5.8",
     "qrcode-react": "^0.1.16",
     "qs": "^6.6.0",
-    "querystring": "^0.2.0",
     "react": "^16.9.0",
     "react-addons-css-transition-group": "15.6.2",
     "react-beautiful-dnd": "^4.0.1",
@@ -101,7 +98,6 @@
     "url": "^0.11.0",
     "velocity-animate": "^1.5.2",
     "what-input": "^5.2.6",
-    "whatwg-fetch": "^1.1.1",
     "zxcvbn": "^4.4.2"
   },
   "devDependencies": {
@@ -137,11 +133,11 @@
     "estree-walker": "^0.5.0",
     "file-loader": "^3.0.1",
     "flow-parser": "^0.57.3",
+    "glob": "^5.0.14",
     "jest": "^24.9.0",
     "matrix-mock-request": "^1.2.3",
     "matrix-react-test-utils": "^0.2.2",
     "react-test-renderer": "^16.9.0",
-    "require-json": "0.0.1",
     "rimraf": "^2.4.3",
     "source-map-loader": "^0.2.3",
     "stylelint": "^9.10.1",