mini_dump: Cleanup and add comments

Removes some unnecessary code.

wip

src/yuzu/mini_dump.h

@@ -7,6 +7,7 @@
 void CreateMiniDump(HANDLE process_handle, DWORD process_id, MINIDUMP_EXCEPTION_INFORMATION* info,
                     EXCEPTION_POINTERS* pep);
 
+void DumpFromDebugEvent(DEBUG_EVENT& deb_ev, PROCESS_INFORMATION& pi);
 bool SpawnDebuggee(const char* arg0, PROCESS_INFORMATION& pi);
 void DebugDebuggee(PROCESS_INFORMATION& pi);
 const char* ExceptionName(DWORD exception);