revert: remove beamer resizebox filter, keep tabularx skip for beamer

Adjustbox in presentation.org template handles beamer tables.
Resizebox filter was conflicting with it.

config.el

@@ -379,7 +379,7 @@ Bound to cmd+v in org-mode and markdown-mode."
 
 (defun my/org-latex-fix-tabularx (table backend _info)
   "Convert tabular/tabularx → tabularx{\\linewidth}{lYYY} in LaTeX output.
-Skip for beamer exports — beamer uses adjustbox wrapper on plain tabular instead."
+Skip for beamer exports — beamer uses adjustbox on plain tabular."
   (when (and (stringp table)
              (not (org-export-derived-backend-p backend 'beamer)))
     (with-temp-buffer
@@ -412,29 +412,6 @@ Skip for beamer exports — beamer uses adjustbox wrapper on plain tabular inste
 
 (add-hook 'org-export-before-processing-hook #'my/org-ensure-tabularx-filter)
 
-;; Beamer: tables → resizebox (scale to slide width), allowframebreaks globally
-(with-eval-after-load 'ox-beamer
-  (setq org-beamer-frame-default-options "allowframebreaks"))
-
-(defun my/org-beamer-resizebox-tables (table backend _info)
-  "Wrap tabular environments in \\resizebox for beamer exports."
-  (when (and (stringp table)
-             (org-export-derived-backend-p backend 'beamer))
-    (with-temp-buffer
-      (insert table)
-      (goto-char (point-min))
-      (when (re-search-forward "\\\\begin{tabular}" nil t)
-        (goto-char (match-beginning 0))
-        (insert "\\resizebox{\\textwidth}{!}{%\n")
-        (goto-char (point-max))
-        (when (search-backward "\\end{tabular}" nil t)
-          (goto-char (match-end 0))
-          (insert "\n}")))
-      (buffer-string))))
-
-(with-eval-after-load 'ox-beamer
-  (add-to-list 'org-export-filter-table-functions #'my/org-beamer-resizebox-tables))
-
 ;; Optional: enable booktabs style (horizontal rules in tables)
 ;; (setq org-latex-tables-booktabs t)