Retract Lein-specific documentation

Author: vemv

cider.el

@@ -406,9 +406,7 @@ The plist supports the following keys
 enrich-classpath is a Clojure CLI shim, and Leiningen plugin.
 
 This classpath expansion is done in a clean manner,
-without interfering with classloaders.
-
-Only available for Leiningen projects at the moment."
+without interfering with classloaders."
   :type 'boolean
   :package-version '(cider . "1.2.0")
   :safe #'booleanp)

doc/modules/ROOT/pages/config/basic_config.adoc

@@ -42,7 +42,6 @@ You can enable it by setting the `cider-enrich-classpath` defcustom to `t`.
 With it enabled, `cider-jack-in` will activate enrich-classpath, given the following conditions:
 
 * You are on macOS/Linux
-* You are on Leiningen
 * You are launching a vanilla JVM repl (and not a cljs repl, or a clj+cljs repl)
 
 ...those conditions will be progressively relaxed.