9828 svr4pkg: pkgremove/special.c is unused
Review Request #1203 - Created Sept. 10, 2018 and submitted
The file pkgremove/special.c in svr4pkg, and some related defines and comments, is unused so can be removed entirely.
(And pkgremove/main.c has been cstyled.)
Build is clean.
Also, I have put the pkgremove and pkginstall binaries in place on a test syetm and verified that pkgadd and pkgrm still work.