Remove unused build.cmd.

build.cmd

@@ -1,21 +0,0 @@
-@echo off
-:: To build extensions for 64 bit Python 3, we need to configure environment
-:: variables to use the MSVC 2010 C++ compilers from GRMSDKX_EN_DVD.iso of:
-:: MS Windows SDK for Windows 7 and .NET Framework 4
-::
-:: More details at:
-:: https://github.com/cython/cython/wiki/CythonExtensionsOnWindows
-
-IF "%DISTUTILS_USE_SDK%"=="1" (
-    ECHO Configuring environment to build with MSVC on a 64bit architecture
-    ECHO Using Windows SDK 7.1
-    "C:\Program Files\Microsoft SDKs\Windows\v7.1\Setup\WindowsSdkVer.exe" -q -version:v7.1
-    CALL "C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.cmd" /x64 /release
-    SET MSSdk=1
-    REM Need the following to allow tox to see the SDK compiler
-    SET TOX_TESTENV_PASSENV=DISTUTILS_USE_SDK MSSdk INCLUDE LIB
-) ELSE (
-    ECHO Using default MSVC build environment
-)
-
-CALL %*