crt/msvcrt.def.in: Always declare `_mkgmtime{32,64}`.

Signed-off-by: Liu Hao <lh_mouse@126.com>
diff --git a/mingw-w64-crt/lib-common/msvcrt.def.in b/mingw-w64-crt/lib-common/msvcrt.def.in
index 1311541..449beb0 100644
--- a/mingw-w64-crt/lib-common/msvcrt.def.in
+++ b/mingw-w64-crt/lib-common/msvcrt.def.in
@@ -869,9 +869,8 @@
 _memicmp_l
 _mkdir
 _mkgmtime
-F_I386(_mkgmtime32)
-F_ARM_ANY(_mkgmtime32)
-F_NON_I386(_mkgmtime64)
+_mkgmtime32
+_mkgmtime64
 _mktemp
 ; _mktemp_s replaced by emu
 F_I386(_mktime32 == mktime)