Remove zstd version check in the header file

Author: AA-Turner

Modules/_zstd/_zstdmodule.h

@@ -12,14 +12,6 @@ Python module.
 #include "zdict.h"
 
 
-// if you update the minimum version, you should update the compile
-// check in configure.ac
-#define PYTHON_MINIMUM_SUPPORTED_ZSTD_VERSION 10405
-
-#if ZSTD_VERSION_NUMBER < PYTHON_MINIMUM_SUPPORTED_ZSTD_VERSION
-    #error "_zstd module requires zstd v1.4.5+"
-#endif
-
 /* Forward declaration of module state */
 typedef struct _zstd_state _zstd_state;