Eliminate unused spectag and speclines goo from spec

Eliminate unused spectag and speclines goo from spec
- These were used, back in the day, to implement a hidden --specedit
  switch, which in all its glory did: print a copy of a spec file,
  with group, summary and description looked up from specspo.
  This huge pile of junk was left behind from kicking out the
  useless "feature" in commits 7b95061d3b77d8e6b3c80e856b66f49b393511ba and
  0f991a14209054da7c45c46e96750738fc62874d.