Remove name that was deprecated in 2010. This is super old.

theano/tensor/signal/downsample.py

@@ -3,7 +3,6 @@ from . import pool
 import warnings
 
 warnings.warn("downsample module has been moved to the pool module.")
-max_pool2D = pool.max_pool2D
 max_pool_2d_same_size = pool.max_pool_2d_same_size
 max_pool_2d = pool.pool_2d
 DownsampleFactorMax = pool.Pool

theano/tensor/signal/pool.py

@@ -16,12 +16,6 @@ import theano
 from theano import gof, Op, tensor, Variable, Apply
 
 
-def max_pool2D(*args, **kwargs):
-    import sys
-    print("DEPRECATION: max_pool2D renamed to pool_2d", file=sys.stderr)
-    return pool_2d(*args, **kwargs)
-
-
 def max_pool_2d_same_size(input, patch_size):
     """
     Takes as input a 4-D tensor. It sets all non maximum values