removed scheduling function

tools.py

@@ -899,33 +899,6 @@ class Until:
         return step < self._until
 
 
-def schedule(string, step):
-    try:
-        return float(string)
-    except ValueError:
-        match = re.match(r"linear\((.+),(.+),(.+)\)", string)
-        if match:
-            initial, final, duration = [float(group) for group in match.groups()]
-            mix = torch.clip(torch.Tensor([step / duration]), 0, 1)[0]
-            return (1 - mix) * initial + mix * final
-        match = re.match(r"warmup\((.+),(.+)\)", string)
-        if match:
-            warmup, value = [float(group) for group in match.groups()]
-            scale = torch.clip(step / warmup, 0, 1)
-            return scale * value
-        match = re.match(r"exp\((.+),(.+),(.+)\)", string)
-        if match:
-            initial, final, halflife = [float(group) for group in match.groups()]
-            return (initial - final) * 0.5 ** (step / halflife) + final
-        match = re.match(r"horizon\((.+),(.+),(.+)\)", string)
-        if match:
-            initial, final, duration = [float(group) for group in match.groups()]
-            mix = torch.clip(step / duration, 0, 1)
-            horizon = (1 - mix) * initial + mix * final
-            return 1 - 1 / horizon
-        raise NotImplementedError(string)
-
-
 def weight_init(m):
     if isinstance(m, nn.Linear):
         in_num = m.in_features