Update digger_workflow.yml

Author: jocelo

.github/workflows/digger_workflow.yml

@@ -6,13 +6,6 @@ on:
     types: [ opened, synchronize ]
   issue_comment:
     types: [created]
-  workflow_dispatch:
-    inputs:
-      run_name:
-        required: false
-      spec:
-        description: 'spec input for digger'
-        required: true
 
 jobs:
   plan: