reduce SignalHandler dependency on StepMania.cpp

stepmania/src/archutils/Unix/CrashHandler.cpp

@@ -446,12 +446,6 @@ static void do_backtrace( const void **buf, size_t size )
 
 void CrashSignalHandler( int signal )
 {
-#if !defined(BACKTRACE_METHOD_POWERPC_DARWIN)
-	/* Don't dump a debug file if the user just hit ^C. */
-	if( signal == SIGINT || signal == SIGTERM || signal == SIGHUP )
-		return;
-#endif
-
 	if( g_pCrashHandlerArgv0 )
 	{
 		safe_print(fileno(stderr), "Crash handler failed: CrashHandlerHandleArgs was not called\n", NULL);