11226 Remove NetraCT support

*** 20,29 ****
--- 20,30 ----
  #
  
  #
  # Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
+ # Copyright 2019 Peter Tribble.
  #
  # uts/sun/Makefile.files
  #
  # This Makefile defines file modules and build rules for the directory
  # uts/sun and its children. These are the source files which are
*** 72,87 ****
  ZS_OBJS +=      zs_async.o      zs_common.o
  
  ZSH_OBJS +=     zs_hdlc.o
  
  #
- #                       streams modules
- #
- 
- TTYMUX_OBJS +=  ttymux.o ttymux_ioctl.o
- 
- #
  #       Section 3:      Misc.
  #
  LINT_DEFS       += -Dsun
  
  INC_PATH        += -I$(UTSBASE)/sun
--- 73,82 ----