feat: Implement Remove and RemoveAll

internal/fs/file.go

@@ -150,10 +150,6 @@ func (f *File) WriteString(s string) (ret int, err error) {
 func (f *File) closeWithoutLocking() error {
 	log.Println("File.closeWithoutLocking", f.name)
 
-	if f.info.IsDir() {
-		return ErrIsDirectory
-	}
-
 	if f.reader != nil {
 		if err := f.reader.Close(); err != nil {
 			return err

internal/fs/filesystem.go

@@ -118,13 +118,13 @@ func (f *FileSystem) OpenFile(name string, flag int, perm os.FileMode) (afero.Fi
 func (f *FileSystem) Remove(name string) error {
 	log.Println("FileSystem.Remove", name)
 
-	panic(ErrNotImplemented)
+	return f.writeOps.Delete(name)
 }
 
 func (f *FileSystem) RemoveAll(path string) error {
 	log.Println("FileSystem.RemoveAll", path)
 
-	panic(ErrNotImplemented)
+	return f.writeOps.Delete(path)
 }
 
 func (f *FileSystem) Rename(oldname, newname string) error {