Removed sumitridhal in config.yaml

[garethahealy]

CI is failing:

• https://github.com/redhat-cop/org/actions/runs/32010389842

Found\",\"documentation_url\":\"https://docs.github.com/rest/teams/members#add-or-update-team-membership-for-a-user\",\"status\":\"404\"}","severity":"warning","time":"2026-08-17T08:27:09Z"}
{"component":"peribolos","level":"fatal","msg":"Configuration failed: failed to configure redhat-cop teams: failed to update partner-ecosystem-certification members: UpdateTeamMembership(partner-ecosystem-certification(partner-ecosystem-certification), sumitridhal, true) failed: status code 404 not one of [200], body: {\"message\":\"Not Found\",\"documentation_url\":\"https://docs.github.com/rest/teams/members#add-or-update-team-membership-for-a-user\",\"status\":\"404\"}","severity":"fatal","time":"2026-08-17T08:27:09Z"}

Removing @sumitridhal