remove Extensions navbar item

Created by: 5h1rU

fix #16567 (closed)

• Remove the menu option from the navigation bar
• Remove the UI component from the codebase
• Update snapshots

Created by: codecov[bot]

Codecov Report

Merging #17389 (79d9980) into main (65295c6) will decrease coverage by 0.00%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main   #17389      +/-   ##
==========================================
- Coverage   52.14%   52.14%   -0.01%     
==========================================
  Files        1710     1709       -1     
  Lines       85379    85375       -4     
  Branches     7531     7525       -6     
==========================================
- Hits        44522    44516       -6     
- Misses      36949    36950       +1     
- Partials     3908     3909       +1     

Flag	Coverage Δ
go	51.22% <ø> (-0.01%)
integration	30.56% <ø> (-0.05%)
storybook	30.15% <ø> (-0.02%)
typescript	54.36% <ø> (-0.01%)
unit	34.84% <ø> (-0.02%)

Impacted Files	Coverage Δ
client/web/src/nav/NavLinks.tsx	88.23% <ø> (-0.66%)
.../internal/codeintel/resolvers/graphql/locations.go	83.50% <0.00%> (-2.07%)

Created by: felixfbecker

@5h1rU Awesome! This fix needs to be cherry-picked from main into the 3.24 release branch (which is being released tomorrow). You can find the here: https://about.sourcegraph.com/handbook/engineering/releases#cherry-picking-a-fix-onto-release-branch and get help from @sourcegraph/distribution if needed

Created by: 5h1rU

@davejrt is the release captain. He is taking care of this commit. https://github.com/sourcegraph/sourcegraph/commit/01db917471cb8c8dce0f637a9c494c96fed351fc

Anything you need, please ping me!