For windows, all python version should use /MT (#4468)

diff --git a/python/setup.py b/python/setup.py
index afe021f..8f1caec 100755
--- a/python/setup.py
+++ b/python/setup.py
@@ -203,9 +203,7 @@
       extra_compile_args.append('-DMS_WIN64')
 
     # MSVS default is dymanic
-    if (sys.platform == 'win32' and
-        ((sys.version_info[0] == 3 and sys.version_info[1] == 5) or
-         (sys.version_info[0] == 3 and sys.version_info[1] == 6))):
+    if (sys.platform == 'win32'):
       extra_compile_args.append('/MT')
 
     if "clang" in os.popen('$CC --version 2> /dev/null').read():