Remove import of test suite from main __init__

- The 6-year old comment indicated that the import was done because of some GPU configuration, without providing any details - The import actually imported the first thing called "tests" that is found in the PATH

Remove import of test suite from main init
0421b6f5 · Michael Osthege · Brandon T. Willard · 295ea57d · 0421b6f5
--- a/theano/__init__.py
+++ b/theano/__init__.py
@@ -165,10 +165,6 @@ from theano.updates import OrderedUpdates
 from theano.gradient import Rop, Lop, grad, subgraph_grad
-# This need to be before the init of GPU, as it add config variable
-# needed during that phase.
-import tests
 if (
    config.device.startswith("cuda")
    or config.device.startswith("opencl")