Remove local label error checking

This is actually not necessary, because RGBLINK would warn about missing labels.
Besides, through semi-esoteric ways, it is possible to define more labels in this scope,
and there's no reason to prevent that.

src/asm/main.c

@@ -471,7 +471,6 @@ int main(int argc, char *argv[])
 			       (int)(60 / timespent * nTotalLines));
 	}
 
-	out_CheckErrors();
 	/* If no path specified, don't write file */
 	if (tzObjectname != NULL)
 		out_WriteObject();