Drop cider.tasks/nrepl-server usage

Now that boot supports the new nRepl, we do need a custom task anymore so we
are going to use the built-in one.

CHANGELOG.md

@@ -17,6 +17,7 @@
 * `cider-print-options` is now supported by the `pr` option for `cider-print-fn`. The options will now be also used by interactive eval commands that do not use pretty-printing.
 * `spec-list` and `spec-form` requests send the current namespace for alias resolution.
 * `C-c , C-g` and `C-c C-t C-g` cancel the key chord instead of rerunning the last test. The respective command has been moved to `C-c , C-a`, `C-c , a`, `C-c C-t C-a` and `C-c C-t a`.
+* [#2643](https://github.com/clojure-emacs/cider/issues/2643): **(Breaking)** Stop using the `cider.tasks/nrepl-server` custom task for `cider-jack-in` with Boot.
 
 ### Bug fixes
 

cider.el

@@ -130,7 +130,7 @@ version from the CIDER package or library.")
   :package-version '(cider . "0.14.0"))
 
 (defcustom cider-boot-parameters
-  "cider.tasks/nrepl-server -b localhost wait"
+  "repl -s -b localhost wait"
   "Params passed to boot to start an nREPL server via `cider-jack-in'."
   :type 'string
   :group 'cider