Remove package-lock.json in apps/roam

[mdroidian]

https://github.com/DiscourseGraphs/discourse-graph/blob/main/apps/roam/package-lock.json

This is a remnant from the Query Builder fork. package-lock.json now lives in root.

Removing this breaks patch-package.

Waiting on ds300/patch-package#551

[mdroidian]

Temporary fix here: #329