ENH remove tcult, I no longer work with cells :)

etc/conf.org

@@ -2381,7 +2381,6 @@ I use tags for agenda filtering (primarily for GTD contexts, see below). Each ta
         
         ;; gtd resource context 
         (,org-x-tag-laptop . ?l)
-        (,org-x-tag-tcult . ?t)
         (,org-x-tag-phone . ?p)
         
         ;; misc tags 

local/lib/org-x/org-x.el

@@ -100,10 +100,6 @@
   (org-x-prepend-char org-x-tag-resource-prefix "laptop")
   "Tag denoting a laptop resource.")
 
-(defconst org-x-tag-tcult
-  (org-x-prepend-char org-x-tag-resource-prefix "tcult")
-  "Tag denoting a tissue-culture resource.")
-
 (defconst org-x-tag-phone
   (org-x-prepend-char org-x-tag-resource-prefix "phone")
   "Tag denoting a phone resource.")