Commit
f06b1c598 removed validate_exec from pg_upgrade and instead
exported it from src/common, but the macro for checking executable
suffix on Windows was accidentally left. Fix by removing.
Author: Alexander Lakhin
Discussion: https://postgr.es/m/c1d63754-cb85-2d8a-8409-bde2c4d2d04b@gmail.com
#define RMDIR_CMD "@RMDIR /s/q"
#define SCRIPT_PREFIX ""
#define SCRIPT_EXT "bat"
-#define EXE_EXT ".exe"
#define ECHO_QUOTE ""
#define ECHO_BLANK "."
#endif