Update to-do.md

to-do.md

@@ -2,9 +2,8 @@
 2. local PatBase?
 3. patent acceptance prediction
 4. predict the primary IPC or CPC code of a patent application given (some subset of) the text of the application.
-5. abstractive summarization: given the claims or claims section of a patent application, generate the abstract.
-6. chatwPatent
-7. Given the claims, summary, and background art, generate an abstract.
+5. chatwPatent
+6. Given the claims, summary, and background art, generate an abstract.
 
 
 dataset--