Removed documentation stub for stale elements.

This, yet to be written, section will be added later. Going to remove it for
now from the changes made for using web elements as locators and will make a
seperate commit/pull request for it.

Author: emanlove

src/Selenium2Library/__init__.py

@@ -101,11 +101,6 @@ class Selenium2Library(
     | css        | Table Should Contain `|` css=table.my_class `|` text               | Matches by @id or @name attribute |
     | xpath      | Table Should Contain `|` xpath=//table/[@name="my_table"] `|` text | Matches by @id or @name attribute |
 
-    *Stale and Detached Elements*
-
-    To be written... a talk about stale/detached elements, the dreaded
-    StaleElementReferenceException and how to deal with these situations.
-
     *Timeouts*
 
     There are several `Wait ...` keywords that take timeout as an