Remove codecov.yml
Remove codecov.yml

Tests were not ignored during the build associated with commit e431f26. As a result, I'm going to delete this file for now. We will keep the issue open and return to it in the future.

watson-developer-cloud/ios-sdk,watson-developer-cloud/ios-sdk,tad-iizuka/swift-sdk,tad-iizuka/swift-sdk,tad-iizuka/swift-sdk,tad-iizuka/swift-sdk,watson-developer-cloud/ios-sdk,tad-iizuka/swift-sdk,watson-developer-cloud/ios-sdk,watson-developer-cloud/ios-sdk