update icon: bash: Remove invisible outline of plain icon

[Finii]

[why] When calculating the bounding box of the icon the real icon is too far right. There is in fact a invisible box on the real icon's left.

[how] Edit svg file directly (in vi) and just remove the outline's description.

Double check these details before you open a PR

• [x] PR does not match another non-stale PR currently opened

Features

Load icon into inkscape and just select all - note the ghost square on the left ?!

Removed path marked blue:

This PR closes NONE

Notes

@Snailedlt as per https://github.com/ryanoasis/nerd-fonts/pull/1691#issuecomment-2313090871