removing old yarn PATH reference from linux_js executor

Author: Anthony Mayer

src/executors/linux_js.yml

@@ -9,6 +9,4 @@ parameters:
     default: medium
 docker:
   - image: cimg/node:<<parameters.node_version>>
-resource_class: <<parameters.resource_class>>
-environment:
-  - PATH: '/opt/yarn/yarn-v1.5.1/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'
+resource_class: <<parameters.resource_class>>