10080 smatch Makefile changes for usr/src/cmd

@@ -20,10 +20,11 @@
 #
 #
 # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
+# Copyright (c) 2018, Joyent, Inc.
 
 include         ../Makefile.sp
 
 ROOTLIBLPBIN =  $(ROOTLIBLP)/bin
 

@@ -32,12 +33,10 @@
 OBJECTS =       $(PROG).o
 
 ROOTPROG=       $(PROG:%=$(ROOTLIBLPBIN)/%)
 $(ROOTPROG)     := FILEMODE=555
 
-CERRWARN +=     -_gcc=-Wno-implicit-function-declaration
-
 .KEEP_STATE:
 
 all:            $(PROG)
 
 $(ROOTLIBLPBIN):