4028 remove CLOSED_IS_PRESENT

*** 343,360 ****
  PATH="/opt/onbld/bin:/opt/onbld/bin/${MACH}:/opt/SUNWspro/bin:/usr/ccs/bin:/usr/bin:/usr/sbin:/usr/ucb:/usr/etc:/usr/openwin/bin:/usr/sfw/bin:/opt/sfw/bin:."
  if [[ "${SUNWSPRO}" != "" ]]; then 
          export PATH="${SUNWSPRO}/bin:$PATH" 
  fi 
  
- if [[ -z "$CLOSED_IS_PRESENT" ]]; then
-         if [[ -d $SRC/../closed ]]; then
-                 export CLOSED_IS_PRESENT="yes"
-         else
-                 export CLOSED_IS_PRESENT="no"
-         fi
- fi
- 
  TOOLS="${SRC}/tools"
  TOOLS_PROTO="${TOOLS}/proto/root_${MACH}-nd" ; export TOOLS_PROTO
  
  if "${flags.t}" ; then
          export ONBLD_TOOLS="${ONBLD_TOOLS:=${TOOLS_PROTO}/opt/onbld}"
--- 343,352 ----
*** 419,438 ****
  [[ "$MULTI_PROTO" == "yes" ]] && export ROOT="${ROOT}${SUFFIX}"
  
  export TONICBUILD="#"
  
  if "${flags.O}" ; then 
-         if [[ "$CLOSED_IS_PRESENT" != "yes" ]]; then
                  print "OpenSolaris closed binary generation requires "
                  print "closed tree"
                  exit 1
-         fi
-         print "Generating OpenSolaris deliverables"
-         # We only need CLOSEDROOT in the env for convenience. Makefile.master
-         # figures out what it needs when it matters.
-         export CLOSEDROOT="${ROOT}-closed"
-         export TONICBUILD=""
  fi
  
  ENVLDLIBS1="-L$ROOT/lib -L$ROOT/usr/lib"
  ENVCPPFLAGS1="-I$ROOT/usr/include"
  MAKEFLAGS=e
--- 411,423 ----