Remove windows ifdefs

Author: mariadb-LeonidFedorov

datatypes/mcs_datatype.cpp

@@ -19,20 +19,12 @@
 #include <string>
 #include <iostream>
 #include <stack>
-#ifdef _MSC_VER
-#include <unordered_map>
-#else
 #include <tr1/unordered_map>
-#endif
 #include <fstream>
 #include <sstream>
 #include <cerrno>
 #include <cstring>
-#ifdef _MSC_VER
-#include <unordered_set>
-#else
 #include <tr1/unordered_set>
-#endif
 #include <utility>
 #include <cassert>
 using namespace std;

datatypes/mcs_datatype.h

@@ -27,19 +27,12 @@
 #include "mcs_double.h"
 #include "mcs_longdouble.h"
 
-#ifdef _MSC_VER
-typedef int mcs_sint32_t;
-#else
 typedef int32_t mcs_sint32_t;
-#endif
 
 // Because including my_sys.h in a Columnstore header causes too many conflicts
 struct charset_info_st;
 typedef const struct charset_info_st CHARSET_INFO;
 
-#ifdef _MSC_VER
-#define __attribute__(x)
-#endif
 
 namespace
 {