bug#14496: cc-bytecomp-obsolete-fun doesn't work

[Glenn Morris]

Package: emacs,cc-mode
Version: 24.1

cc-bytecomp-obsolete-fun hasn't worked for 2+ years (Emacs 24.1
onwards), since it calls cc-bytecomp-ignore-obsolete, which uses
byte-compile-obsolete, which was removed 2011-04-01.

Since no-one has complained (and a web-search shows zero apparent users
of cc-bytecomp-obsolete-fun), please can it just be removed.


IMO most of the rest of cc-bytecomp should also be removed.
cc-bytecomp-defun is replaced by the standard `declare-function', which
works since Emacs 23.1 (and is defined in 22.2 onwards as a compat stub).

cc-bytecomp-defvar is replaced by `(defvar foo)' with no init value.