docs: Remove outdated references to WDK

Change-Id: Iab787fa84e76fefd5b22bd97566dbf47cf642ed0
diff --git a/BUILD.md b/BUILD.md
index 8928936..c08c198 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -71,15 +71,6 @@
 the loader. You must also take note of the headers install directory and pass
 it on the CMake command line for building this repository, as described below.
 
-#### Windows Driver Kit (WDK)
-
-On Windows builds, the loader needs to have a WDK installed. Microsoft provides
-[WDK releases](https://docs.microsoft.com/en-us/windows-hardware/drivers/download-the-wdk),
-including several old releases. The installed WDK must be at least version 1709.
-Take note of the fact that the latest WDK release generally requires the latest
-version of Visual Studio. It may be necessary to use an older WDK with an older
-Visual Studio.
-
 #### Google Test
 
 The loader tests depend on the [Google Test](https://github.com/google/googletest)
@@ -208,7 +199,6 @@
     - [2019](https://www.visualstudio.com/vs/downloads/)
   - The Community Edition of each of the above versions is sufficient, as
     well as any more capable edition.
-- [Windows Driver Kit](https://docs.microsoft.com/en-us/windows-hardware/drivers/download-the-wdk) 1803 or later
 - [CMake 3.10.2](https://cmake.org/files/v3.10/cmake-3.10.2-win64-x64.zip) is recommended.
   - Use the installer option to add CMake to the system PATH
 - Git Client Support
@@ -242,12 +232,7 @@
 
 Note that if you do not wish to use a developer command prompt, you may either
 run either `vcvars64.bat` or `vcvars32.bat` to set the required environment
-variables. You may also define a `WDK_FULL_PATH` variable when first invoking CMake
-like:
-
-    cmake -A x64 --DVULKAN_HEADERS_INSTALL_DIR=absolute_path_to_install_dir -DWDK_BASE="C:/Program Files (x86)/Windows Kits/10/Include/10.0.17763.0" ..
-
-See below for the details.
+variables.
 
 #### Use `CMake` to Create the Visual Studio Project Files