ci: remove because node x86 package not found

Scrum · Scrum · commit 3a3c4e0aa0a5 · 2019-06-06T13:57:21.000+03:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,6 +1,5 @@
 environment:
   matrix:
-    - nodejs_version: "12"
     - nodejs_version: "11"
     - nodejs_version: "10"
     - nodejs_version: "9"
