Fixes for proptypes related errors

Author: BPScott

config/typescript/prop-types.d.ts

@@ -185,8 +185,7 @@
     "@shopify/react-compose": "^1.0.0",
     "@shopify/react-utilities": "^2.0.4",
     "@shopify/useful-types": "^1.2.4",
-    "@types/prop-types": "^15.7.1",
-    "@types/react": "^16.4.7",
+    "@types/react": "16.4.7",
     "@types/react-dom": "^16.0.6",
     "@types/react-transition-group": "^2.0.7",
     "hoist-non-react-statics": "^2.5.0",

package.json

@@ -2200,7 +2200,7 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-8.10.17.tgz#d48cf10f0dc6dcf59f827f5a3fc7a4a6004318d3"
   integrity sha512-3N3FRd/rA1v5glXjb90YdYUa+sOB7WrkU2rAhKZnF4TKD86Cym9swtulGuH0p9nxo7fP5woRNa8b0oFTpCO1bg==
 
-"@types/prop-types@*", "@types/prop-types@^15.7.1":
+"@types/prop-types@*":
   version "15.7.1"
   resolved "https://registry.yarnpkg.com/@types/prop-types/-/prop-types-15.7.1.tgz#f1a11e7babb0c3cad68100be381d1e064c68f1f6"
   integrity sha512-CFzn9idOEpHrgdw8JsoTkaDDyRWk1jrzIV8djzcgpq0y9tG4B4lFT+Nxh52DVpDXV+n4+NPNv7M1Dj5uMp6XFg==