chore: regenerate _pq_ctypes.pyi

Following commit a7f2802.

Author: dlax

psycopg/psycopg/pq/_pq_ctypes.pyi

@@ -144,7 +144,6 @@ def PQdb(arg1: Optional[PGconn_struct]) -> Optional[bytes]: ...
 def PQuser(arg1: Optional[PGconn_struct]) -> Optional[bytes]: ...
 def PQpass(arg1: Optional[PGconn_struct]) -> Optional[bytes]: ...
 def PQhost(arg1: Optional[PGconn_struct]) -> Optional[bytes]: ...
-def _PQhostaddr(arg1: Optional[PGconn_struct]) -> Optional[bytes]: ...
 def PQport(arg1: Optional[PGconn_struct]) -> Optional[bytes]: ...
 def PQtty(arg1: Optional[PGconn_struct]) -> Optional[bytes]: ...
 def PQoptions(arg1: Optional[PGconn_struct]) -> Optional[bytes]: ...
@@ -204,16 +203,9 @@ def PQsetSingleRowMode(arg1: Optional[PGconn_struct]) -> int: ...
 def PQgetCancel(arg1: Optional[PGconn_struct]) -> PGcancel_struct: ...
 def PQfreeCancel(arg1: Optional[PGcancel_struct]) -> None: ...
 def PQputCopyData(arg1: Optional[PGconn_struct], arg2: bytes, arg3: int) -> int: ...
-def _PQsetTraceFlags(arg1: Optional[PGconn_struct], arg2: int) -> None: ...
 def PQuntrace(arg1: Optional[PGconn_struct]) -> None: ...
 def PQfreemem(arg1: Any) -> None: ...
-def _PQencryptPasswordConn(arg1: Optional[PGconn_struct], arg2: bytes, arg3: bytes, arg4: bytes) -> Optional[bytes]: ...
 def PQmakeEmptyPGresult(arg1: Optional[PGconn_struct], arg2: int) -> PGresult_struct: ...
-def _PQpipelineStatus(arg1: Optional[PGconn_struct]) -> int: ...
-def _PQenterPipelineMode(arg1: Optional[PGconn_struct]) -> int: ...
-def _PQexitPipelineMode(arg1: Optional[PGconn_struct]) -> int: ...
-def _PQpipelineSync(arg1: Optional[PGconn_struct]) -> int: ...
-def _PQsendFlushRequest(arg1: Optional[PGconn_struct]) -> int: ...
 def PQinitOpenSSL(arg1: int, arg2: int) -> None: ...
 # autogenerated: end
 # fmt: on