bpo-47243: Duplicate entry in 'Objects/unicodetype_db.h' (GH-32376)

Fix for duplicate 1st entry in 'Objects/unicodetype_db.h':

```c
/* a list of unique character type descriptors */
const _PyUnicode_TypeRecord _PyUnicode_TypeRecords[] = {
    {0, 0, 0, 0, 0, 0},
    {0, 0, 0, 0, 0, 0}, <--- HERE
    {0, 0, 0, 0, 0, 32},
    {0, 0, 0, 0, 0, 48},
    …
```

https://bugs.python.org/issue47243

Automerge-Triggered-By: GH:isidentical