tweaks: remove two superfluous calls of wnoutrefresh()

The bottomwin has just been refreshed by update_the_statusbar(),
and it should not be the responsibility of the prompt routines
to keep the edit window up to date, as they don't write anything
there.

src/prompt.c

@@ -459,10 +459,6 @@ functionptrtype acquire_an_answer(int *actual, bool allow_tabs,
 
     update_the_statusbar();
 
-    /* Refresh edit window and statusbar before getting input. */
-    wnoutrefresh(edit);
-    wnoutrefresh(bottomwin);
-
     while (TRUE) {
 	/* Ensure the cursor is shown when waiting for input. */
 	curs_set(1);