6197 get rid of unused checks in fs-root and fs-usr boot scripts

*** 19,28 ****
--- 19,29 ----
  #
  # CDDL HEADER END
  #
  #
  # Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
+ # Copyright 2015 Nexenta Systems, Inc. All rights reserved.
  #
  
  # Make sure that the libraries essential to this stage of booting can be found.
  LD_LIBRARY_PATH=/lib; export LD_LIBRARY_PATH
  
*** 72,107 ****
  # reside on /usr minimizing the space required by the root file
  # system.
  #
  readvfstab "/usr" < $vfstab
  if [ -n "$mountp" ]; then
!         if [ "$fstype" = cachefs ]; then
!                 #
!                 # Mount without the cache initially.  We'll enable it
!                 # later at remount time.  This lets us avoid
!                 # teaching the statically linked mount program about
!                 # cachefs.  Here we determine the backfstype.
!                 # This is not pretty, but we have no tools for parsing
!                 # the option string until we get /usr mounted...
!                 #
!                 case "$mntopts" in
!                 *backfstype=nfs*)
!                         cfsbacktype=nfs
!                         ;;
!                 *backfstype=hsfs*)
!                         cfsbacktype=hsfs
!                         ;;
!                 *)
!                         msg='invalid vfstab entry for /usr'
!                         echo $msg
!                         echo "$SMF_FMRI:" $msg >/dev/msglog
!                         cfsbacktype=nfs
!                         ;;
!                 esac
!                 mountfs - /usr $cfsbacktype ro $special ||
!                     exit $SMF_EXIT_ERR_FATAL
!         elif [ "$fstype" = zfs ]; then
                  mountfs - /usr $fstype $mntopts - || exit $SMF_EXIT_ERR_FATAL
          else
                  #
                  # Must use -o largefiles here to ensure the
                  # read-only mount does not fail as a result of
--- 73,83 ----
  # reside on /usr minimizing the space required by the root file
  # system.
  #
  readvfstab "/usr" < $vfstab
  if [ -n "$mountp" ]; then
!         if [ "$fstype" = zfs ]; then
                  mountfs - /usr $fstype $mntopts - || exit $SMF_EXIT_ERR_FATAL
          else
                  #
                  # Must use -o largefiles here to ensure the
                  # read-only mount does not fail as a result of