Revert "New command 'mode-line-invisible-mode'"

This reverts commit 7e56ffd51bc5a00919f6a6af99fe9d329331a126.
It caused failure to bootstrap.  (Bug#78881)

3 files changed, 0 insertions, 46 deletions

diff --git a/doc/emacs/display.texi b/doc/emacs/display.texi
index fca9aebe927..ad496b5b1cd 100644
--- a/doc/emacs/display.texi
+++ b/doc/emacs/display.texi
@@ -1826,14 +1826,6 @@ further ``compress'' the mode line, you may customize the
 and Emacs will hide some minor mode indicators on the mode line by
 collapsing them into a single clickable button.
 
-@findex mode-line-invisible-mode
-  By default, most buffers display a mode line, but if the mode line is
-not useful in a buffer, you can use the command @w{@kbd{M-x
-mode-line-invisible-mode}} to hide the mode line in the current buffer,
-the mode line remains hidden until this command is called again.  To
-always hide the mode line when entering to a major mode, add
-@code{mode-line-invisible-mode} to a hook @pxref{Hooks}.
-
 @node Text Display
 @section How Text Is Displayed
 @cindex characters (in text)
diff --git a/etc/NEWS b/etc/NEWS
index acb6e04f9cd..7504326374a 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -353,13 +353,6 @@ This option allows changing or removing the delimiters shown around
 the major mode and list of minor modes in the mode line.  The default
 retains the existing behavior of inserting parentheses.
 
-+++
-*** New minor mode 'mode-line-invisible-mode'.
-This minor mode makes the mode-line of the current buffer invisible.
-The command 'mode-line-invisible-mode' toggles the visibility of the
-current-buffer's mode-line.  The default is to show the mode line of
-every buffer.
-
 ** Tab Bars and Tab Lines
 
 ---
diff --git a/lisp/bindings.el b/lisp/bindings.el
index d7ec11ca323..8b021a05ce2 100644
--- a/lisp/bindings.el
+++ b/lisp/bindings.el
@@ -56,37 +56,6 @@ corresponding to the mode line clicked."
     (widen)
     (force-mode-line-update)))
 
-;; Variable used by `mode-line-invisible-mode' for
-;; store mode-line value in current buffer.
-(defvar-local mode-line-invisible--buf-state)
-
-(define-minor-mode mode-line-invisible-mode
-  "Toggle the mode-line visibility of the current buffer.
-Hide the mode line if it is shown, and show it if it's hidden."
-  :global nil
-  (if mode-line-invisible-mode
-      (progn
-        (add-hook 'after-change-major-mode-hook #'mode-line-invisible-mode nil t)
-        (setq mode-line-invisible--buf-state
-              (buffer-local-set-state mode-line-format nil)))
-
-    (remove-hook 'after-change-major-mode-hook #'mode-line-invisible-mode t)
-
-    (when mode-line-invisible--buf-state
-      (setq mode-line-invisible--buf-state
-            (buffer-local-restore-state mode-line-invisible--buf-state)))
-
-    ;; Display a mode line if buffer does not have one by default
-    (unless mode-line-format
-      (setq-local mode-line-format (default-value 'mode-line-format)))
-
-    ;; Update mode line
-    (when (called-interactively-p 'any)
-      (force-mode-line-update))))
-
-(put 'mode-line-invisible--buf-state 'permanent-local t)
-(put 'mode-line-invisible-mode 'permanent-local-hook t)
-
 (defvar mode-line-input-method-map
   (let ((map (make-sparse-keymap)))
     (define-key map [mode-line mouse-2]