removing datasets + imports optimization

rl_coach/environments/toy_problems/exploration_chain.py

@@ -1,8 +1,25 @@
-import numpy as np
-import gym
-from gym import spaces
+#
+# Copyright (c) 2017 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 from enum import Enum
 
+import gym
+import numpy as np
+from gym import spaces
+
 
 class ExplorationChain(gym.Env):
     metadata = {