Drop support for SLIME

[bbatsov]

This is a pretty big change - it removes all the SLIME support that was part of clojure-mode. Since you've announced the deprecation of swank-clojure a while ago I think it's time we let go of the past. The SLIME support can live on in a separate branch (should you decide to create one) or in a separate source file like clojure-mode-slime (or something).

Dropping the SLIME support cleans up the clojure-mode code base significantly and will provide more focus to the development of nrepl.el which is clearly the future.

[technomancy]

Cool; feels good to delete code.

The next release of clojure-mode will be 2.0.0 since we've introduced a number of breaking changes, so maybe we could add a note that if you still want slime support you can stick with version 1.x.

The diff for this is strange though--you're adding a paredit-mode defvar to a section of code that doesn't exist in my fork. Do you have some extra code to pacify the byte-compiler that this pull request doesn't include?

[bbatsov]

The diff looks strange because of the extra brace on that particular line - the paredit-mode defvar wasn't on the last line before the deletions. I'll update the README accordingly.

[technomancy]

Never mind about the diff--my local copy was outdated. Thanks.