Merge pull request #1862 from LLK/revert-1861-greenkeeper-pls/scratch-vm-0.1.0-prerelease.1524520946

Revert "Update scratch-vm"

package.json

@@ -94,7 +94,7 @@
     "scratch-paint": "0.2.0-prerelease.20180423143518",
     "scratch-render": "0.1.0-prerelease.1523453612",
     "scratch-storage": "0.4.0",
-    "scratch-vm": "0.1.0-prerelease.1524520946",
+    "scratch-vm": "0.1.0-prerelease.1524254811",
     "selenium-webdriver": "3.6.0",
     "startaudiocontext": "1.2.1",
     "style-loader": "^0.20.0",