Revert "on windows, paste image from clipboard to take priority over …

…html target containing image so that can work offline (#2303, work of @DaPa)" as it is not acceptable that paste from spreadsheet cells generates a picture instead of a table

This reverts commit 3eac022.

src/ct/ct_clipboard.cc

@@ -170,12 +170,6 @@ void CtClipboard::_paste_clipboard(Gtk::TextView* pTextView, CtCodebox* /*pCodeb
             if (vec::exists(targets, CtConst::TARGET_CTD_TABLE))
                 return std::make_tuple(CtConst::TARGET_CTD_TABLE, received_table, false);
 #if defined(_WIN32)
-            // on Windows, if the web clipboard is an image then paste it immediately (no html download needed)
-            if (is_rich_text) {
-                for (auto& target : CtConst::TARGETS_IMAGES)
-                    if (vec::exists(targets, target))
-                        return std::make_tuple(target, received_image, false);
-            }
             if (vec::exists(targets, CtConst::TARGET_WIN_HTML))
                 return std::make_tuple(CtConst::TARGET_WIN_HTML, received_html, false);
 #endif // _WIN32