dinput: Remove unused Wine debug channel

[Andrew Talbot]

Changelog:
    dinput: Remove unused Wine debug channel.

diff --git a/dlls/dinput/config.c b/dlls/dinput/config.c
index 56cbdf3..abf3fd5 100644
--- a/dlls/dinput/config.c
+++ b/dlls/dinput/config.c
@@ -18,15 +18,12 @@
 
 #define NONAMELESSUNION
 
-#include "wine/debug.h"
 #include "wine/unicode.h"
 #include "objbase.h"
 #include "dinput_private.h"
 #include "device_private.h"
 #include "resource.h"
 
-WINE_DEFAULT_DEBUG_CHANNEL(dinput);
-
 typedef struct {
     int nobjects;
     IDirectInputDevice8W *lpdid;