Dedupe entries in transforms.__all__

Author: ricardoV94

pymc/distributions/transforms.py

@@ -32,16 +32,12 @@
 )
 
 __all__ = [
-    "Chain",
     "Chain",
     "CholeskyCorrTransform",
     "CholeskyCovPacked",
-    "CholeskyCovPacked",
     "Interval",
     "Transform",
     "ZeroSumTransform",
-    "ZeroSumTransform",
-    "circular",
     "circular",
     "log",
     "log_exp_m1",