Remove reference to the deprecated and disabled Typo issue

Metalava no longer looks for common typos. It relies on the code
analyzers that run on Gerrit to detect them.

Bug: 294300564
Bug: 288072162
Test: m checkapi
Change-Id: I08eca8008af39ebe69442db419ebd3d3378aa0de
Merged-In: I08eca8008af39ebe69442db419ebd3d3378aa0de
(cherry picked from commit c0036491)