Remove a table example inconsistent with the guide

Author: patiencedaur

doc/contributing/docs/images/do.png

@@ -3,7 +3,7 @@ Language and style
 ==================
 
 ..  contents::
-    :maxdepth: 2
+    :depth: 2
 
 
 General style
@@ -111,18 +111,6 @@ use the ``list-table`` directive, as described in the Tarantool
 Translators find it hard to work with content "drawn" with ASCII characters,
 because it requires adjusting the number of spaces and manually counting characters.
 
-Bad example:
-
-..  image:: images/dont.png
-    :width: 400
-    :alt: Don't "draw" tables with ASCII characters
-
-Good example:
-
-..  image:: images/do.png
-    :width: 400
-    :alt: Use the "list-table" directive instead
-
 
 Format code as code
 ~~~~~~~~~~~~~~~~~~~