--- libicu/uc/putil.cpp	2019-12-23 14:38:39.756890521 +0300
+++ libicu/putil.cpp	2021-11-22 10:13:32.884483858 +0300
@@ -46,11 +46,6 @@
 // First, the platform type. Need this for U_PLATFORM.
 #include "unicode/platform.h"
 
-#if U_PLATFORM == U_PF_MINGW && defined __STRICT_ANSI__
-/* tzset isn't defined in strict ANSI on MinGW. */
-#undef __STRICT_ANSI__
-#endif
-
 /*
  * Cygwin with GCC requires inclusion of time.h after the above disabling strict asci mode statement.
  */