You can get remove the display of the associated pictures in the message box, while the text is displayed. 

This adjustment serves to gradually reduce visual prompts, making it a useful feature for fading away the prompt.

In version 6.6.

To eliminate the pictures within the message box, follow these steps: 

  1. Tap on the Menu > Settings. 
  2. Under the "Picture Settings" within the Appearance section, locate "Pictures in Message Box" and switch it OFF. This turns off the display of pictures associated with the text display on the Message box. 

In version lesser than 6.6

Tap Settings > Pictures in msg box(under Picture settings) and turn it OFF to remove the pictures in message box. This is useful to fade away the visual prompts.