Remove StatsBoxGrid stories

[minimalsm]

Description

Currently, the StatBoxs grid component uses Date.now, which causes the stories to fully re-run every time, even when the component hasn't changed. This behavior prevents Turbosnaps from functioning properly because the component receives a new date on every run.

Proposed Solution

As we're developing a new, simpler stats component for the new homepage, we should delete these stories for now to mitigate the issue. Removing these stories will stop the unnecessary re-runs and enable Turbosnaps to function as intended.

Steps to Reproduce

• Observe that the stories for StatBoxs grid component are re-run every time, due to the use of Date.now.
• Notice that this prevents Turbosnaps from working efficiently.

Additional Context

This is a temporary measure to avoid unnecessary re-runs while we work on the new stats component for the homepage. Once the new component is in place, this issue should no longer occur.