Revert "winmm: Increase mmdevapi buffer sizes.".

This reverts commit fdfff7cf6013a030f2b240b13b02831e502d49e7.

In theory, this commit should have had no affect on winmm-using
applications and just prevented underruns on the mmdevapi side. But
Patrol Falcon abuses the winmm API by modifying the buffer after
passing it to waveOutWrite, and this patch breaks that behavior. We've
improved the winecoreaudio driver since this patch was sent, and so
large buffers should no longer be necessary to avoid underruns.
dsound: Report buffer notifications in offset order.
winedbg: Remove unused code (Clang).
wintrust: Remove unused variable (Clang).
user32/tests: Remove unused variables (Clang).
windowscodecs: Remove unused strings (Clang).
wineoss.drv: Remove unused string (Clang).
winex11.drv: Remove unused code (Clang).
winspool.drv: Remove unused strings (Clang).
kernel32/tests: Remove unused code (Clang).
secur32: Declare debug channels only when needed (Clang).
shell32: Remove unused string (Clang).
shell32/tests: Remove unused variables (Clang).
urlmon/tests: Remove unused strings (Clang).
wininet: Remove unused strings (Clang).
api-ms-win-core-fibers-l1-1-0: Add dll.
api-ms-win-core-datetime-l1-1-0: Add dll.
api-ms-win-core-xstate-l2-1-0: Add stub dll.
api-ms-win-core-winrt-error-l1-1-1: Add stub dll.
joy.cpl: Avoid pointers to out of scope variables (PVS-Studio).