remove firefox, failing on windows
diff --git a/appveyor.yml b/appveyor.yml
index 5147ffb..dddec7f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -8,7 +8,6 @@
   - git clone https://github.com/apache/cordova-blackberry --depth 10
   - git clone https://github.com/apache/cordova-windows --depth 10
   - git clone https://github.com/apache/cordova-wp8 --depth 10
-  - git clone https://github.com/apache/cordova-firefoxos --depth 10
   - git clone https://github.com/apache/cordova-ubuntu --depth 10
   - git clone https://github.com/apache/cordova-browser --depth 10
   - git clone https://github.com/apache/cordova-amazon-fireos --depth 10