Reader: inspect zip file content to choose provider (#12902)

frontend/document/document.lua

@@ -67,24 +67,9 @@ function Document:_init()
     self.info = {
         -- whether the document is pageable
         has_pages = false,
-        -- whether words can be provided
-        has_words = false,
-        -- whether hyperlinks can be provided
-        has_hyperlinks = false,
-        -- whether (native to format) annotations can be provided
-        has_annotations = false,
-
-        -- whether pages can be rotated
-        is_rotatable = false,
-
         number_of_pages = 0,
         -- if not pageable, length of the document in pixels
         doc_height = 0,
-
-        -- other metadata
-        title = "",
-        author = "",
-        date = ""
     }
 
     -- Should be updated by a call to Document.updateColorRendering(self) in subclasses