Issue Summary

Editing bitbucket-pipelines.yml and trying to remove variables does nothing.

Steps to Reproduce

1. Create a repository variables
2. Edit bitbucket-pipelines.yml
3. On the right side under Variables, click the delete button on the variable
   

Expected Results

Variable is deleted

Actual Results

It does nothing; the variable still exists

Workaround

Manually delete the variables from repository settings > Repository Variables