unused site setting git.cloneURLToRepositoryName

Created by: keegancsmith

The documentation for this setting is

JSON array of configuration that maps from Git clone URL to repository name. Sourcegraph automatically resolves remote clone URLs to their proper code host. However, there may be non-remote clone URLs (e.g., in submodule declarations) that Sourcegraph cannot automatically map to a code host. In this case, use this field to specify the mapping. The mappings are tried in the order they are specified and take precedence over automatic mappings.

However, I do not see anywhere in our codebase we actually read this setting. We should remove this field. cc @sourcegraph/core-services to discuss.