[PATCH 2/3] worktree: delete dead code

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

This "link" was a feature in early iterations of multiple worktree
functionality but for some reason it was dropped. Since nobody creates
this "link", there's no need to check it.

This is mostly used to let the user moves a worktree manually [1]. If
you move a worktree within the same file system, this hard link count
lets us know the worktree is still there even if we don't know where it
is.

We're having proper worktree move support now and don't need this
anymore.

[1] 23af91d102 (prune: strategies for linked checkouts - 2014-11-30)

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 Documentation/gitrepository-layout.txt | 5 -----
 builtin/worktree.c                     | 8 --------
 2 files changed, 13 deletions(-)

diff --git a/Documentation/gitrepository-layout.txt b/Documentation/gitrepository-layout.txt
index c60bcad44a..e85148f05e 100644
--- a/Documentation/gitrepository-layout.txt
+++ b/Documentation/gitrepository-layout.txt
@@ -275,11 +275,6 @@ worktrees/<id>/locked::
 	or manually by `git worktree prune`. The file may contain a string
 	explaining why the repository is locked.
 
-worktrees/<id>/link::
-	If this file exists, it is a hard link to the linked .git
-	file. It is used to detect if the linked repository is
-	manually removed.
-
 SEE ALSO
 --------
 linkgit:git-init[1],
diff --git a/builtin/worktree.c b/builtin/worktree.c
index 4e7c98758f..60440c4106 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -99,15 +99,7 @@ static int prune_worktree(const char *id, struct strbuf *reason)
 	}
 	path[len] = '\0';
 	if (!file_exists(path)) {
-		struct stat st_link;
 		free(path);
-		/*
-		 * the repo is moved manually and has not been
-		 * accessed since?
-		 */
-		if (!stat(git_path("worktrees/%s/link", id), &st_link) &&
-		    st_link.st_nlink > 1)
-			return 0;
 		if (st.st_mtime <= expire) {
 			strbuf_addf(reason, _("Removing worktrees/%s: gitdir file points to non-existent location"), id);
 			return 1;
-- 
2.16.1.435.g8f24da2e1a