backbot: drop conflict_resolution option

Author: yhabteab

.github/workflows/backbot.yml

@@ -49,7 +49,6 @@ jobs:
           github_token: ${{ steps.backbot-token.outputs.token }}
           copy_labels_pattern: '^(?!cla\/signed$).*' # copy all labels other than the cla/signed label
           label_pattern: 'backport-to-(support\/\d+\.\d+)' # regex to match labels like backport-to-support/2.14
-          conflict_resolution: 'draft_commit_conflicts' # create a draft PR if there are conflicts
           merge_commits: skip # skip merge commits found in the original PR history
           pull_description: |-
             Backport of #${pull_number} to `${target_branch}`, triggered by a label.