[3.14] gh-143048: Remove outdated mention to curses in the "Interactive Mode" docs (GH-143049) (#143325)

gh-143048: Remove outdated mention to `curses` in the "Interactive Mode" docs (GH-143049)
(cherry picked from commit 2d9f4e3)

Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>

Author: miss-islington

Doc/tutorial/appendix.rst

@@ -14,8 +14,7 @@ There are two variants of the interactive :term:`REPL`.  The classic
 basic interpreter is supported on all platforms with minimal line
 control capabilities.
 
-On Windows, or Unix-like systems with :mod:`curses` support,
-a new interactive shell is used by default since Python 3.13.
+Since Python 3.13, a new interactive shell is used by default.
 This one supports color, multiline editing, history browsing, and
 paste mode.  To disable color, see :ref:`using-on-controlling-color` for
 details.  Function keys provide some additional functionality.