bpo-42847: Normalise Lib/sqlite3/test/* file encodings (GH-24147)

Convert from ISO-8859-1 to UTF-8.
diff --git a/Lib/sqlite3/test/dbapi.py b/Lib/sqlite3/test/dbapi.py
index 7985cd3..68a3062 100644
--- a/Lib/sqlite3/test/dbapi.py
+++ b/Lib/sqlite3/test/dbapi.py
@@ -1,7 +1,6 @@
-#-*- coding: iso-8859-1 -*-
 # pysqlite2/test/dbapi.py: tests for DB-API compliance
 #
-# Copyright (C) 2004-2010 Gerhard Häring <gh@ghaering.de>
+# Copyright (C) 2004-2010 Gerhard Häring <gh@ghaering.de>
 #
 # This file is part of pysqlite.
 #