Remove GitImport admin command

This tool has served its purpose and we don't need it anymore. There is no reason to keep compiling the code and bloating our binaries.

Author: Turbo87

src/admin/git_import.rs

@@ -3,7 +3,6 @@ pub mod delete_crate;
 pub mod delete_version;
 pub mod dialoguer;
 pub mod enqueue_job;
-pub mod git_import;
 pub mod migrate;
 pub mod on_call;
 pub mod populate;

src/admin/mod.rs

@@ -19,7 +19,6 @@ enum Command {
     Migrate(migrate::Opts),
     UploadIndex(upload_index::Opts),
     YankVersion(yank_version::Opts),
-    GitImport(git_import::Opts),
     #[clap(subcommand)]
     EnqueueJob(enqueue_job::Command),
     #[clap(subcommand)]