Unused wsmap, begone!

- held only reference to wnew0, which was the only consumer
of wmalloc0, safe trip both of them.

WINGs/WINGs/WUtil.h

@@ -237,12 +237,10 @@ char* wexpandpath(char *path);
 char* wgethomedir();
 
 void* wmalloc(size_t size);
-void* wmalloc0(size_t size);
 void* wrealloc(void *ptr, size_t newsize);
 void wfree(void *ptr);
 
 #define wnew(type, count) wmalloc(sizeof(type)*count)
-#define wnew0(type, count) wmalloc0(sizeof(type)*count)
 
 void wrelease(void *ptr);
 void* wretain(void *ptr);