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

Author: LiarPrincess

Misc/NEWS.d/next/Core and Builtins/2022-04-16-15-37-55.gh-issue-91399.trLbK6.rst

@@ -0,0 +1 @@
+Removed duplicate '{0, 0, 0, 0, 0, 0}' entry in 'Objects/unicodetype_db.h'.