Github is failing to clean up webhooks during DELETE lifecycle

I was using the IBM Cloud Functions UI and I noticed the following behavior for Github trigger.

When I would create a trigger it would appear to create the Trigger and the Feed fine. The feed calls response was:
`
{"duration":589,"name":"webhook","subject":"eweiter@us.ibm.com","activationId":"e8ec3315288c4457ac3315288cf457d1","publish":false,"annotations":[{"key":"path","value":"whisk.system/github/webhook"},{"key":"waitTime","value":37},{"key":"kind","value":"nodejs:6"},{"key":"limits","value":{"timeout":60000,"memory":256,"logs":10}},{"key":"initTime","value":249}],"version":"0.0.264","response":{"result":{"response":"{\"type\":\"Repository\",\"id\":20159188,\"name\":\"web\",\"active\":true,\"events\":[\"push\"],\"config\":{\"url\":\"https://xxx:yyy@10.121.10.111:443/api/v1/namespaces/eweiter%40us.ibm.com_dev/triggers/JasonTest\",\"content_type\":\"json\",\"insecure_ssl\":\"0\"},\"updated_at\":\"2018-01-16T17:52:37Z\",\"created_at\":\"2018-01-16T17:52:37Z\",\"url\":\"https://api.github.com/repos/eweiter/bumblefoot/hooks/20159188\",\"test_url\":\"https://api.github.com/repos/eweiter/bumblefoot/hooks/20159188/test\",\"ping_url\":\"https://api.github.com/repos/eweiter/bumblefoot/hooks/20159188/pings\",\"last_response\":{\"code\":null,\"status\":\"unused\",\"message\":null}}"},"success":true,"status":"success"},"end":1516125157900,"logs":[],"start":1516125157311,"namespace":"eweiter@us.ibm.com_dev"}
`
To me it is showing that a "Push" event was created and that it is Active.

However when I go to delete that Trigger, the Feed deletion encounters an error. The Feed deletion response was:
`
{"duration":207,"name":"webhook","subject":"eweiter@us.ibm.com","activationId":"6a3da00bcc7448e6bda00bcc7438e60d","publish":false,"annotations":[{"key":"limits","value":{"timeout":60000,"memory":256,"logs":10}},{"key":"path","value":"whisk.system/github/webhook"},{"key":"kind","value":"nodejs:6"},{"key":"waitTime","value":23}],"version":"0.0.264","response":{"result":{"error":"Found no existing webhooks for trigger URL https://xxx:yyy@10.121.10.111:443/api/v1/namespaces/eweiter%40us.ibm.com_dev/triggers/JasonTest"},"success":false,"status":"application error"},"end":1516125185130,"logs":[],"start":1516125184923,"namespace":"eweiter@us.ibm.com_dev"}
`
Where it is telling me that it couldn't find any hooks on that trigger to delete and it is returning a status code of 502.

Steps to recreate:
1) Create a Trigger with the Github feed using the "push" event
2) Delete the Trigger