bug#45645: Please revoke this commit: 7dd1a2174a8376c521dcf271e3b76f64096074fe

[luhux]

Sorry for submitting the wrong patch.

Recently, when I checked the sdcv source code, I found that this environment 
variable does not support multiple paths and is separated by colons.


```
    const gchar *stardict_data_dir = g_getenv("STARDICT_DATA_DIR");
    std::string data_dir;
    if (!opt_data_dir) {
        if (!only_data_dir) {
            if (stardict_data_dir)
                data_dir = stardict_data_dir;
            else
                data_dir = "/usr/share/stardict/dic";
        }
    } else {
        data_dir = get_impl(opt_data_dir);
    }

```

Please revoke the content of this commit.

luhux