Update classes.R

Author: cboettig

R/classes.R

@@ -478,13 +478,14 @@ setClass("ListOfnode", slots = c(names="character"),
 
 ################################## actually AbstractTree
 
+# No longer required in R >= 4.2.0                    
 ## Thanks Gabor for work-around from S4 namespaces collision issue
 # https://github.com/ropensci/RNeXML/issues/251#issuecomment-1031996431
-tryCatch({
-  rlang::env_unlock(asNamespace("cli"))
-  removeClass("tree", asNamespace("cli"))
-  rlang::env_lock(asNamespace("cli"))
-}, error = function(err) NULL)
+#tryCatch({
+#  rlang::env_unlock(asNamespace("cli"))
+#  removeClass("tree", asNamespace("cli"))
+#  rlang::env_lock(asNamespace("cli"))
+#}, error = function(err) NULL)
 
 setClass("tree", 
          slots = c(node = "ListOfnode",