ReaderZooming: revert Autocrop fix (#11325)

From f990937f9f.

frontend/apps/reader/modules/readerzooming.lua

@@ -527,7 +527,7 @@ function ReaderZooming:getZoom(pageno)
         local ubbox_dimen = self.ui.document:getUsedBBoxDimensions(pageno, 1)
         -- if bbox is larger than the native page dimension render the full page
         -- See discussion in koreader/koreader#970.
-        if (ubbox_dimen.w <= page_size.w and ubbox_dimen.h <= page_size.h) or (self.ui.document.configurable.trim_page == 1) then
+        if ubbox_dimen.w <= page_size.w and ubbox_dimen.h <= page_size.h then
             page_size = ubbox_dimen
             self.view:onBBoxUpdate(ubbox_dimen)
         else