Remove show_dot from docs/EMBEDDING.md

This should have been a part of commit 243d7fd

(cherry picked from commit d44f7e0)

Author: CendioZeijlon

docs/EMBEDDING.md

@@ -89,9 +89,6 @@ Currently, the following options are available:
 
 * `compression` - The session compression level. Can be `0` to `9`.
 
-* `show_dot` - If a dot cursor should be shown when the remote server provides
-  no local cursor, or provides a fully-transparent (invisible) cursor.
-
 * `logging` - The console log level. Can be one of `error`, `warn`, `info` or
   `debug`.