Remove IO logic from presentation code for worktrees

We're doing all the IO in our workers loader method so that we don't need to do any
in our presentation code

pkg/commands/git_commands/worktree.go

@@ -1,7 +1,6 @@
 package git_commands
 
 import (
-	"errors"
 	"io/fs"
 	"log"
 	"os"
@@ -59,36 +58,6 @@ func (self *WorktreeCommands) Detach(worktreePath string) error {
 	return self.cmd.New(cmdArgs).Run()
 }
 
-func (self *WorktreeCommands) IsCurrentWorktree(path string) bool {
-	return IsCurrentWorktree(path)
-}
-
-func IsCurrentWorktree(path string) bool {
-	pwd, err := os.Getwd()
-	if err != nil {
-		return false
-	}
-
-	return EqualPath(pwd, path)
-}
-
-func (self *WorktreeCommands) IsWorktreePathMissing(path string) bool {
-	if _, err := os.Stat(path); err != nil {
-		if errors.Is(err, fs.ErrNotExist) {
-			return true
-		}
-		self.Log.Errorf("failed to check if worktree path `%s` exists\n%v", path, err)
-		return false
-	}
-	return false
-}
-
-// checks if two paths are equal
-// TODO: support relative paths
-func EqualPath(a string, b string) bool {
-	return a == b
-}
-
 func WorktreeForBranch(branch *models.Branch, worktrees []*models.Worktree) (*models.Worktree, bool) {
 	for _, worktree := range worktrees {
 		if worktree.Branch == branch.Name {
@@ -105,7 +74,7 @@ func CheckedOutByOtherWorktree(branch *models.Branch, worktrees []*models.Worktr
 		return false
 	}
 
-	return !IsCurrentWorktree(worktree.Path)
+	return !worktree.IsCurrent
 }
 
 // If in a non-bare repo, this returns the path of the main worktree