Fix volume 7

books.py

@@ -53,6 +53,12 @@ class MyChapter(Chapter):
         # return new element-tree
         return etree
 
+    def replace_images(self, image_dir: str, timeout: int = 10):
+        super().replace_images(image_dir, timeout)
+        for img in self.etree.xpath(".//img"):
+            if img.attrib["src"].startswith("http"):
+                img.getparent().remove(img)
+
 
 def async_wrap(func):
     @wraps(func)