Remove duplicated icon from git-repo-windows resource definition

See gh-22163

Author: XenoAmess

ci/pipeline.yml

@@ -88,7 +88,6 @@ resources:
     git_config:
     - name: core.autocrlf
       value: true
-  icon: github-circle
 - name: git-pull-request
   type: pull-request
   icon: source-pull