Remove command for viewing Clojure Grimoire (#574)

The Clojure Grimoire site (conj.io) is no longer operational. Remove the command for browsing that site.

Author: crimeminister

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Changes
 
 * [#571](https://github.com/clojure-emacs/clojure-mode/issues/571): Remove `project.el` integration.
+* [#574](https://github.com/clojure-emacs/clojure-mode/issues/574): Remove `clojure-view-grimoire` command.
 
 ## 5.12.0 (2020-08-13)
 

clojure-mode.el

@@ -293,7 +293,6 @@ Out-of-the box `clojure-mode' understands lein, boot, gradle,
          ["View a Clojure guide" clojure-view-guide]
          ["View a Clojure reference section" clojure-view-reference-section]
          ["View the Clojure cheatsheet" clojure-view-cheatsheet]
-         ["View the Clojure Grimoire" clojure-view-grimoire]
          ["View the Clojure style guide" clojure-view-style-guide])
         "--"
         ["Report a clojure-mode bug" clojure-mode-report-bug]
@@ -436,14 +435,6 @@ The command will prompt you to select one of the available sections."
   (interactive)
   (browse-url clojure-cheatsheet-url))
 
-(defconst clojure-grimoire-url "https://www.conj.io/"
-  "The URL of the Grimoire community documentation site.")
-
-(defun clojure-view-grimoire ()
-  "Open the Clojure Grimoire in your default browser."
-  (interactive)
-  (browse-url clojure-grimoire-url))
-
 (defconst clojure-style-guide-url "https://guide.clojure.style"
   "The URL of the Clojure style guide.")