Revert "add overload to tuple.__new__ to better express an empty tuple" (#8278)

This reverts commit 64554bdd5d.

Also add a test case.

test_cases/stdlib/builtins/test_tuple.py

@@ -0,0 +1,11 @@
+from typing_extensions import assert_type
+from typing import Tuple
+
+
+# Empty tuples, see #8275
+class TupleSub(Tuple[int, ...]):
+    pass
+
+
+assert_type(TupleSub(), TupleSub)
+assert_type(TupleSub([1, 2, 3]), TupleSub)