TODO label cleanup

Author: slayoo

PySDM/dynamics/impl/random_generator_optimizer.py

@@ -31,7 +31,7 @@ def get_random_arrays(self):
                 self.rand.urand(self.rnd)
         else:
             shift = 0
-            self.pairs_rand.urand(self.rnd)  # TODO #399
+            self.pairs_rand.urand(self.rnd)
             self.rand.urand(self.rnd)
         self.substep += 1
         return self.pairs_rand[shift:self.core.n_sd + shift], self.rand