Remove left-over self.tag setting in PowerLaw init
@@ -519,7 +519,6 @@ class PowerLaw(SpectralModel):
self.index = Parameter("index", index)
self.amplitude = Parameter("amplitude", amplitude)
self.reference = Parameter("reference", reference, frozen=True)
- self.tag = "PowerLaw"
super().__init__([self.index, self.amplitude, self.reference])
