Remove old files not used anymore.

A couple of test fixes

Fix problems in daily buildbot (debug mode)

Warn if taking softmax over broadcastable dimension

We already encountered then in ProfileStats.__init__

The gpu back-end may have been imported, but we are not even timing a GPU function

Otherwise it is not actually testing anything.

Fix precision in cudnn

always the product of a matrix with its transpose.

Code simplification. The function are the same except for the default value of the subsample parameter.

Fix overflow in pooling

[ENH] for rc3, Graph clean up, faster compilation, conv.assert_shape Theano flags, add unsafe in useless opt

Remove warp-synchronous programming.