Revert the commit explaining ignoring unused-ignore more explicitly, which I have now spun out into an orthogonal PR

Author: wyattscarpenter

docs/source/error_code_list2.rst

@@ -481,12 +481,9 @@ Example:
         # Error: unused "type: ignore" comment
         return a + b  # type: ignore
 
-Mypy errors can typically be silenced by putting a ``# type: ignore`` comment after them,
-but because this is *already* a ``# type: ignore`` comment, the only way to selectively
-silence it is to include the error code explicitly, making the comment
-``# type: ignore[unused-ignore]``.
-
-This error is not shown if the ``# type: ignore`` is not used due to code being statically
+Note that due to a specific nature of this comment, the only way to selectively
+silence it, is to include the error code explicitly. Also note that this error is
+not shown if the ``# type: ignore`` is not used due to code being statically
 unreachable (e.g. due to platform or version checks).
 
 Example: