[toolchain] Remove use of Prefix

beat/core/toolchain.py

@@ -56,11 +56,7 @@ class Storage(utils.Storage):
 
         self.username, self.name, self.version = name.split('/')
         self.fullname = name
-
-        if isinstance(prefix, utils.Prefix):
-            self.prefix = prefix
-        else:
-            self.prefix = utils.Prefix(prefix)
+        self.prefix = prefix
 
         path = utils.hashed_or_simple(self.prefix, 'toolchains', name, suffix='.json')
         path = path[:-5]