[3.12] gh-109151: Revert readline support in the sqlite3 CLI (#110542)

Revert "[3.12] gh-109151: Enable readline in the sqlite3 CLI (GH-109152) (#110352)"

This reverts commit bc1fe35.

Author: serhiy-storchaka

Lib/sqlite3/__main__.py

@@ -116,10 +116,6 @@ def main(*args):
         else:
             # No SQL provided; start the REPL.
             console = SqliteInteractiveConsole(con)
-            try:
-                import readline
-            except ImportError:
-                pass
             console.interact(banner, exitmsg="")
     finally:
         con.close()