Revert "term: cursor-left: reduce move count by one when lcf=true"

This reverts commit 02e3e4ac9b.

This broke at least Emacs. Cursor movement at the margins *is*
undefined, and the behavior we’re now reverting to matches XTerm.

CHANGELOG.md

@@ -43,8 +43,6 @@
   that it is (much) slower compared to previous foot versions. Use the
   **scrollback.multiplier** option in `foot.ini` if you find the new
   speed too slow (https://codeberg.org/dnkl/foot/issues/144).
-* Cursor left movements moving cursor to wrong location when cursor is
-  “beyond” the right margin.
 
 
 ### Security

terminal.c

@@ -1728,11 +1728,6 @@ term_cursor_home(struct terminal *term)
 void
 term_cursor_left(struct terminal *term, int count)
 {
-    if (unlikely(term->grid->cursor.lcf))
-        count--;
-
-    assert(count >= 0);
-
     int move_amount = min(term->grid->cursor.point.col, count);
     term->grid->cursor.point.col -= move_amount;
     assert(term->grid->cursor.point.col >= 0);