removed inst_scc.rb client (moved to yast2-registration)

- 3.1.23
removed extra comma
Merge pull request #134 from yast/scc_cleanup

Scc cleanup
updated Makefile.am (fixup for the previous commit)
Select network service according product feature. fate#316768

Also see bnc#854500
Updated changelog
Merge pull request #133 from mchf/bnc854500-default-net-service

Select default net service
release
add explanation comment
Merge pull request #135 from yast/fix_export

release