Remove a redundant let-binding from Ispell

Recent optimizer changes revealed a case-fold-search binding in
Ispell that was made redundant in the revision of 2020-11-03
"Simplify ispell-check-version’s use of -vv flag".

* lisp/textmodes/ispell.el (ispell-check-version): Remove no-op
binding of case-fold-search.

diff --git a/lisp/textmodes/ispell.el b/lisp/textmodes/ispell.el
index 0a82bf5a2d479503a5cac65975c786caaa6eab43..4c64531ea35c7fac86c4b8d6b11df77d041297a1 100644 (file)
--- a/lisp/textmodes/ispell.el
+++ b/lisp/textmodes/ispell.el
@@ -649,11 +649,7 @@ Otherwise returns the library directory name, if that is defined."
        result libvar status ispell-program-version)
 
     (with-temp-buffer
-      (setq status (ispell-call-process
-                   ispell-program-name nil t nil
-                   (let ((case-fold-search
-                          (memq system-type '(ms-dos windows-nt))))
-                     "-vv")))
+      (setq status (ispell-call-process ispell-program-name nil t nil "-vv"))
       (goto-char (point-min))
       (if interactivep
          ;; Report version information of ispell