BUILD remove unecessary package and conda build noarch (#352)

Author: glemaitre

conda-recipe/imbalanced-learn/meta.yaml

@@ -6,18 +6,18 @@ source:
   git_rev: 0.3.0
   git_url: https://github.com/scikit-learn-contrib/imbalanced-learn.git
 
+build:
+  number: 1
+  noarch: python
+
 requirements:
   build:
     - python
     - setuptools
-    - numpy
-    - scipy
-    - scikit-learn
+
   run:
     - python
-    - numpy
-    - scipy
-    - scikit-learn
+    - scikit-learn 0.19.*
 
 test:
   requires: