doc: delete `llnode` from diagnostic tooling support tiers
Hey node family
Context
The diagnostic working group currently works on an initiative to re-evaluate the diagnostic tooling list and its maturity.
Updated
In the previous instance, we examined the case of the llnode
module: issue link.
It seems that we don't have a clear idea about the current status of this tool. Until we can clarify the status of this tool, we prefer to remove it from the list.
In parallel, @gireeshpunathil will try to contact potential contributors to see how could we fill the gap.
Discuss
As usual, feel free to share your thoughts on that and your experience with this tool.
With love
cc @nodejs/diagnostics