Remove HAVE_GETLOGIN from win32/config.w32.h.in template (#18865)

PHP once had getlogin() emulation implemented on Windows. This isn't the
case anymore since 2006 (dc34d34),
neither Windows has getlogin() function.

Author: petk

win32/build/config.w32.h.in

@@ -59,7 +59,6 @@
 #undef HAVE_STRUCT_STAT_ST_BLKSIZE
 #undef HAVE_STRUCT_STAT_ST_BLOCKS
 #define HAVE_STRUCT_STAT_ST_RDEV 1
-#define HAVE_GETLOGIN 1
 #define HAVE_SHUTDOWN 1
 #define HAVE_STRCASECMP 1
 #define HAVE_UTIME 1