Hide default CopyPathCommand

As FileManager provides the FmCopy command, the default one might no
longer be of interest. Hide it to avoid duplicated items in sub menus
or the command palette.

Author: deathaxe

prevent_default.py

@@ -61,3 +61,8 @@ def is_visible(self):
 
     def is_enabled(self):
         return False
+
+
+class CopyPathCommand(sublime_plugin.TextCommand):
+    def is_visible(self):
+        return False