Remove unused process_unlabeled input parameter

Co-authored-by: swissspidy <841956+swissspidy@users.noreply.github.com>

Author: Copilot

.github/workflows/issue-triage.yml

@@ -6,11 +6,6 @@ name: Issue Triage
     types: [opened]
   workflow_dispatch:
     inputs:
-      process_unlabeled:
-        description: 'Process all open issues without labels'
-        required: false
-        default: 'true'
-        type: boolean
       issue_number:
         description: 'Issue number to triage (leave empty to process all)'
         required: false

.github/workflows/reusable-issue-triage.yml

@@ -179,7 +179,6 @@ jobs:
                   workflow_id: 'issue-triage.yml',
                   ref: context.ref || 'main',
                   inputs: {
-                    process_unlabeled: 'false',
                     issue_number: issue.number.toString()
                   }
                 });