Merge pull request nus-cs2103-AY2021S2#50 from Hzxin/Improve-DG

Improve dg

Author: Hzxin

docs/DeveloperGuide.md

@@ -264,32 +264,8 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
 
 ### Use cases
 
-(For all use cases below, the **System** is the `AddressBook` and the **Actor** is the `user`, unless specified otherwise)
+(For all use cases below, the **System** is the `RemindMe` and the **Actor** is the `user`, unless specified otherwise)
 
-**Use case: Delete a person**
-
-**MSS**
-
-1.  User requests to list persons
-2.  AddressBook shows a list of persons
-3.  User requests to delete a specific person in the list
-4.  AddressBook deletes the person
-
-    Use case ends.
-
-**Extensions**
-
-* 2a. The list is empty.
-
-  Use case ends.
-
-* 3a. The given index is invalid.
-
-    * 3a1. AddressBook shows an error message.
-
-      Use case resumes at step 2.
-    
----
 
 ### Use Case: `UC01` - add assignment
 
@@ -467,22 +443,7 @@ testers are expected to do more *exploratory* testing.
 
 1. _{ more test cases …​ }_
 
-### Deleting a person
-
-1. Deleting a person while all persons are being shown
-
-   1. Prerequisites: List all persons using the `list` command. Multiple persons in the list.
 
-   1. Test case: `delete 1`<br>
-      Expected: First contact is deleted from the list. Details of the deleted contact shown in the status message. Timestamp in the status bar is updated.
-
-   1. Test case: `delete 0`<br>
-      Expected: No person is deleted. Error details shown in the status message. Status bar remains the same.
-
-   1. Other incorrect delete commands to try: `delete`, `delete x`, `...` (where x is larger than the list size)<br>
-      Expected: Similar to previous.
-
-1. _{ more test cases …​ }_
 
 ### Saving data