Removed "Documentation.md" not adding value and not consitent with internal docs

googlemock/docs/FrequentlyAskedQuestions.md

@@ -607,7 +607,6 @@ See this [recipe](CookBook.md#mocking_side_effects) for more details and an exam
 If you cannot find the answer to your question in this FAQ, there are
 some other resources you can use:
 
-  1. read other [documentation](Documentation.md),
   1. search the mailing list [archive](http://groups.google.com/group/googlemock/topics),
   1. ask it on [googlemock@googlegroups.com](mailto:googlemock@googlegroups.com) and someone will answer it (to prevent spam, we require you to join the [discussion group](http://groups.google.com/group/googlemock) before you can post.).
 

googletest/docs/Documentation.md

-This page lists all documentation markdown files for Google Test **(the
-current git version)**
--- **if you use a former version of Google Test, please read the
-documentation for that specific version instead (e.g. by checking out
-the respective git branch/tag).**
-
-  * [Primer](primer.md) -- start here if you are new to Google Test.
-  * [Samples](samples.md) -- learn from examples.
-  * [AdvancedGuide](advanced.md) -- learn more about Google Test.
-  * [XcodeGuide](XcodeGuide.md) -- how to use Google Test in Xcode on Mac.
-  * [Frequently-Asked Questions](faq.md) -- check here before asking a question on the mailing list.
-
-To contribute code to Google Test, read:
-
-  * [CONTRIBUTING](../../CONTRIBUTING.md) -- read this _before_ writing your first patch.
-  * [PumpManual](PumpManual.md) -- how we generate some of Google Test's source files.