Documentation: kunit: remove claims that kunit is a mocking framework

KUnit does not have any first party support for "mocking".

The original RFC had some, but the code got dropped.
However, the documentation patches never got updated. This fixes that.

https://kunit.dev/mocking.html has a current writeup on the status quo
and will hopefully be eventually folded into the in-kernel
Documentation.

Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Documentation/dev-tools/kunit/api/index.rst

@@ -12,5 +12,4 @@ following sections:
 
 Documentation/dev-tools/kunit/api/test.rst
 
- - documents all of the standard testing API excluding mocking
-   or mocking related features.
+ - documents all of the standard testing API

Documentation/dev-tools/kunit/api/test.rst

@@ -4,8 +4,7 @@
 Test API
 ========
 
-This file documents all of the standard testing API excluding mocking or mocking
-related features.
+This file documents all of the standard testing API.
 
 .. kernel-doc:: include/kunit/test.h
    :internal:

Documentation/dev-tools/kunit/index.rst

@@ -19,7 +19,7 @@ KUnit - Unit Testing for the Linux Kernel
 What is KUnit?
 ==============
 
-KUnit is a lightweight unit testing and mocking framework for the Linux kernel.
+KUnit is a lightweight unit testing framework for the Linux kernel.
 
 KUnit is heavily inspired by JUnit, Python's unittest.mock, and
 Googletest/Googlemock for C++. KUnit provides facilities for defining unit test