Simplify build script.

Author: jkoritzinsky

build.cmd

@@ -1,7 +1,3 @@
 msbuild SharpDX.sln /t:Clean /m /p:Configuration=Release;Platform="Any CPU"
 
-REM Build SharpDX.csproj first not in parallel so we don't have to worry about file locking issues
-REM with shared files between the 4 different generators.
-msbuild Source/SharpDX/SharpDX.csproj /restore /t:Build /p:Configuration=Release
-
 msbuild SharpDX.sln /restore /t:Build;Pack /p:Configuration=Release;Platform="Any CPU" /m