gitserver: Remove deprecated code

Created by: ryanslade

We have a separate list-gitolite path which should be used instead.

Created by: sourcegraph-bot

Notifying subscribers in CODENOTIFY files for diff aeadb5d9ee52bdbe6c355360eb146b410cce9aa3...884df3dcc8331716ecf504dc5ec559eb07feeb22.

Notify	File(s)
@keegancsmith	cmd/gitserver/server/list.go

Created by: codecov[bot]

Codecov Report

Merging #17037 (884df3d) into main (aeadb5d) will increase coverage by 0.00%. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main   #17037   +/-   ##
=======================================
  Coverage   52.33%   52.34%           
=======================================
  Files        1701     1701           
  Lines       84226    84221    -5     
  Branches     7783     7783           
=======================================
- Hits        44083    44082    -1     
+ Misses      36245    36242    -3     
+ Partials     3898     3897    -1     

Flag	Coverage Δ		*Carryforward flag
go	51.45% <ø> (+<0.01%)
integration	29.77% <ø> (ø)		Carriedforward from aeadb5d
storybook	28.86% <ø> (ø)		Carriedforward from aeadb5d
typescript	54.45% <ø> (ø)		Carriedforward from aeadb5d
unit	35.19% <ø> (ø)		Carriedforward from aeadb5d

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
cmd/gitserver/server/list.go	14.63% <ø> (-4.94%)
.../internal/codeintel/resolvers/graphql/locations.go	85.56% <0.00%> (+2.06%)