crt/kernel32.def.in: Remove multimedia timer functions again.

These exports had been added in 8d449b92, but were later removed
in 705bdc43 due to compatibility breakage (see references below).
However they were added back in b95e68ae, so have to be removed
again.

Reference: https://sourceforge.net/p/mingw-w64/bugs/666/
Reference: https://github.com/msys2/MINGW-packages/issues/4984
Signed-off-by: Liu Hao <lh_mouse@126.com>
diff --git a/mingw-w64-crt/lib-common/kernel32.def.in b/mingw-w64-crt/lib-common/kernel32.def.in
index b0b441e..e92f235 100644
--- a/mingw-w64-crt/lib-common/kernel32.def.in
+++ b/mingw-w64-crt/lib-common/kernel32.def.in
@@ -1675,11 +1675,17 @@
 lstrlen
 lstrlenA
 lstrlenW
-timeBeginPeriod
-timeEndPeriod
-timeGetDevCaps
-timeGetSystemTime
-timeGetTime
+;
+; MSDN says these functions are exported
+; from winmm.dll. Commented out for
+; compatibility with older versions of
+; Windows.
+;
+;timeBeginPeriod
+;timeEndPeriod
+;timeGetDevCaps
+;timeGetSystemTime
+;timeGetTime
 uaw_lstrcmpW
 uaw_lstrcmpiW
 uaw_lstrlenW