Revert "feat(pdf): add zoom via touchpad (#10435)"

This reverts commit 89cd619a345c6a31716ebf56d74134d2330ced0b.

src/main/frontend/extensions/pdf/core.cljs

@@ -464,38 +464,6 @@
                                     (set-end! (calc-coords! (.-pageX e) (.-pageY e))))
                                   [])]
 
-  
-  (let [zoom-viewer!
-        (rum/use-callback
-         (util/debounce
-          5 (fn [delta]
-                (if (> delta 0)
-                  ((partial pdf-utils/zoom-out-viewer viewer))
-                  ((partial pdf-utils/zoom-in-viewer viewer)))
-                )
-          )
-         [viewer])]
-        
-    ;; zoom using touchpad  
-    (rum/use-effect! 
-     (fn [] 
-       (when-let [^js/HTMLElement root cnt-el] 
-         (let [fn-wheel (fn [^js/WheelEvent e]  
-                          (let [delta (or (.-deltaY e) (.-detail e) (.-wheelDelta e))]
-                            ;; to exclude horizontal scrolling 
-                            (when (not (integer? delta)) 
-                              (p/do! (zoom-viewer! delta))
-                              ))
-                          )] 
-           (doto root 
-             (.addEventListener "wheel" fn-wheel))
-           
-           ;; destroy 
-           #(doto root 
-              (.removeEventListener "wheel" fn-wheel))))) 
-     [zoom-viewer!])
-    )
-    
     (rum/use-effect!
       (fn []
         (when-let [^js/HTMLElement root cnt-el]