3882 remove xmod & friends

*** 1644,1657 ****
          ser_actx.o
  
  K5_OS=  timeofday.o toffset.o \
          init_os_ctx.o c_ustime.o
  
- SEAL=
- # EXPORT DELETE START
  SEAL=   seal.o unseal.o
- # EXPORT DELETE END
  
  MECH=   delete_sec_context.o \
          import_sec_context.o \
          gssapi_krb5.o \
          k5seal.o k5unseal.o k5sealv3.o \
--- 1644,1654 ----