Remove support for VS 2008 as it does not support C++11 standard.

Docs/Reference.dox

@@ -3785,7 +3785,7 @@ byte[]     Bytecode, produced by AngelScript serializer
 
 - Pointers and references append the * or & symbol to the type without a space in between. For example \c Drawable* drawable, \c %Serializer& dest.
 
-- The macro \c NULL and 0 should not be used for null poitners, \c nullptr is used instead.
+- The macro \c NULL and 0 should not be used for null pointers, \c nullptr is used instead.
 
 - Class definitions proceed in the following order:
   - public constructors and the destructor

cmake_vs2008.bat

@@ -1,23 +0,0 @@
-::
-:: Copyright (c) 2008-2017 the Urho3D project.
-::
-:: Permission is hereby granted, free of charge, to any person obtaining a copy
-:: of this software and associated documentation files (the "Software"), to deal
-:: in the Software without restriction, including without limitation the rights
-:: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-:: copies of the Software, and to permit persons to whom the Software is
-:: furnished to do so, subject to the following conditions:
-::
-:: The above copyright notice and this permission notice shall be included in
-:: all copies or substantial portions of the Software.
-::
-:: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-:: IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-:: FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-:: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-:: LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-:: OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-:: THE SOFTWARE.
-::
-
-@"%~dp0cmake_generic.bat" %* -VS="9 2008"