Comment Module | Delete Feature

# Comment Delete Process

### User Story:

- When the user (buyer) tries to delete a comment using a valid commentID, the comment will be successfully removed.
- if the user (buyer) attempts to delete a comment with an invalid commentID, they will receive a message indicating that the comment details could not be found.

### Task

- [x] Implement Data Access Object (DAO) Layer.
- [x] Implement Service Layer.
- [x] Create JUnit Test Cases.
- [x] Ensure that the test cases are passing.
- [ ] Write clear and concise comments in the code to explain complex logic.

### DAO
- deleteComment()

### Service
- removeComment()

### Service Test
TestDeleteCommentFeature
- testDeleteCommentSuccess()
- testDeleteCommentFailure()

# Flowchart
```mermaid
flowchart TD
A[Start]
B[User Requests to Delete Comment]
C[Validate CommentID]
D{Validation Successful?}
E[Retrieve Comment for Deletion]
F[Display Comment Deletion Confirmation]
G[User Confirms Deletion]
H{Deletion Confirmed?}
I[Delete Comment Data]
J[Comment Deletion Successful]
K[Display Validation Error]
L[Display Deletion Error]
M[End]

A --> B
B --> C
C --> D
D -- Yes --> E
E --> F
F --> G
G --> H
H -- Yes --> I
I --> J
H -- No --> M
D -- No --> K
K --> F
I --> L
L --> M
J --> M

```