4623 Remove -Wno-unused-label from mpt_sas

@@ -60,11 +60,10 @@
 #
 include $(UTSBASE)/intel/Makefile.intel
 
 CERRWARN        += -_gcc=-Wno-parentheses
 CERRWARN        += -_gcc=-Wno-uninitialized
-CERRWARN        += -_gcc=-Wno-unused-label
 CERRWARN        += -_gcc=-Wno-switch
 
 #
 #       Default build targets.
 #