Removed old images references from math single line

Author: m-messer

docs/teacher/reference/response_area_components/Math_Single_Line.md

@@ -50,19 +50,3 @@ Our default parameters include:
 - **math_fonts_default_to_math**: `false` - Text with math fonts is not automatically converted to math mode
 - **math_inline_delimiters**: `['$', '$']` - Delimiters for inline math mode in text output
 - **math_display_delimiters**: `['$$', '$$']` - Delimiters for display/block math mode in text output
-
-## Setting The Answer
-
-Type the correct answer into the 'Response Area Answer' using standard syntax. As the student enters the answer, this will be rendered using the 'live preview' feature, to ensure the correct expression has been entered.
-
-Use the 'Response Area Preview' to check the answer has been set correctly.
-
-![Screenshot](screenshots/ExpressionResponseAreaAnswer.JPG)
-
-## Example Student Response area
-
-Correct response given
-![Screenshot](screenshots/ExpressionCorrect.JPG)
-
-Incorrect response given
-![Screenshot](screenshots/ExpressionIncorrect.JPG)