Update upstream-dispatch.yml

Author: pjfanning

.github/workflows/upstream-dispatch.yml

@@ -7,9 +7,6 @@ on:
     types: [jackson-databind-pushed]
   workflow_dispatch:
 
-env:
-  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
 jobs:
   build:
     name: Build and Test