feature/workspaces: remove +workspace-change-hook

persp-mode provides the following hooks already (among many others):

+ persp-{before,after}-switch-functions
+ persp-renamed-functions
+ persp-created-functions
+ persp-before-kill-functions

This makes +workspace-change-hook redundant.

modules/feature/workspaces/autoload/workspaces.el

@@ -3,9 +3,6 @@
 (defvar +workspace-data-file "_workspaces"
   "The file basename in which to store single workspace perspectives.")
 
-(defvar +workspace-change-hook ()
-  "Hooks run when workspaces are added, removed, renamed or switched to.")
-
 (defvar +workspace--last nil)
 (defvar +workspace--index 0)
 
@@ -155,9 +152,7 @@ Otherwise return t on success, nil otherwise."
     (error "Can't create a new '%s' workspace" name))
   (when (+workspace-exists-p name)
     (error "A workspace named '%s' already exists" name))
-  (when (persp-add-new name)
-    (run-hooks '+workspace-change-hook)
-    t))
+  (persp-add-new name))
 
 ;;;###autoload
 (defun +workspace-rename (name new-name)
@@ -165,9 +160,7 @@ Otherwise return t on success, nil otherwise."
 success, nil otherwise."
   (when (+workspace--protected-p name)
     (error "Can't rename '%s' workspace" name))
-  (when (persp-rename new-name (+workspace-get name))
-    (run-hooks '+workspace-change-hook)
-    name))
+  (persp-rename new-name (+workspace-get name)))
 
 ;;;###autoload
 (defun +workspace-delete (name &optional inhibit-kill-p)
@@ -178,9 +171,7 @@ buffers."
     (error "Can't delete '%s' workspace" name))
   (+workspace-get name) ; error checking
   (persp-kill name inhibit-kill-p)
-  (unless (+workspace-exists-p name)
-    (run-hooks '+workspace-change-hook)
-    t))
+  (not (+workspace-exists-p name)))
 
 ;;;###autoload
 (defun +workspace-switch (name &optional auto-create-p)
@@ -193,11 +184,9 @@ buffers."
     (setq +workspace--last
           (or (and (not (string= old-name persp-nil-name))
                    old-name)
-              +workspaces-main)))
-  (persp-frame-switch name)
-  (when (equal (+workspace-current-name) name)
-    (run-hooks '+workspace-change-hook)
-    t))
+              +workspaces-main))
+    (persp-frame-switch name)
+    (equal (+workspace-current-name) name)))
 
 ;;;###autoload
 (defun +workspace-on-new-frame (frame &optional _new-frame-p)