Keep or remove Site Navigation heading in sidebar?

[gabalafou]

can you open a new issue to discuss further the idea of removing the "Site navigation" title?

Originally posted by @drammock in #1454 (comment)

Summary

The "Site Navigation" heading is hide on wide screen, but shows up on narrow/mobile screen in the primary/left sidebar overlay.

I made a case to remove it in 1454.

[eshalakhotia]

I also agree with this! Could be nice to be able to customize the "Section Navigation" text

[trallard]

Adding a direct ref to the discussion in the above mentioned PR: #1454 (comment)