Fix scroll randomly stopping on iOS

Scrollspy called window.scrollTo on every scroll. iOS kills momentum
scroll on any programmatic window scroll. Removed it. Not needed:
scrollIntoView with block 'nearest' never moves the window here.

Author: scriptogre

www/src/assets/hyperscript/scrollspy.hs

@@ -7,9 +7,7 @@ behavior Scrollspy
     set link to first <a[href='${hash}']/> in me
     if link exists
       set link's @aria-current to 'true'
-      set pageY to window.scrollY
       call link.scrollIntoView({block: 'nearest', behavior: 'instant'})
-      call window.scrollTo(0, pageY)
     end
   end