try without xgboost

.travis.yml

@@ -33,7 +33,7 @@ before_install:
   - conda update -q conda
   - conda info -a
   # future: kapteyn should only be needed for astro package testing  
-  - conda create -q -n test-environment -c conda-forge python=$PYTHON_VERSION pip numpy scipy pyqt matplotlib pyopengl h5py numexpr astropy tornado cython runipy pandas pytest numba pyarrow graphviz python-graphviz pcre lightgbm xgboost catboost scikit-learn py-xgboost
+  - conda create -q -n test-environment -c conda-forge python=$PYTHON_VERSION pip numpy scipy pyqt matplotlib pyopengl h5py numexpr astropy tornado cython runipy pandas pytest numba pyarrow graphviz python-graphviz pcre lightgbm xgboost catboost scikit-learn
   - which pip
   - source activate test-environment
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then

appveyor.yml

@@ -20,7 +20,7 @@ install:
   - conda config --set always_yes yes --set changeps1 no
   - conda update -q conda
   - conda info -a
-  - "conda create -q -n test-environment -c conda-forge python=%PYTHON_VERSION% numpy scipy pyqt matplotlib pyopengl h5py numexpr astropy tornado cython pandas runipy cython pytest numba pyarrow graphviz python-graphviz pcre lightgbm xgboost catboost scikit-learn py-xgboost"
+  - "conda create -q -n test-environment -c conda-forge python=%PYTHON_VERSION% numpy scipy pyqt matplotlib pyopengl h5py numexpr astropy tornado cython pandas runipy cython pytest numba pyarrow graphviz python-graphviz pcre lightgbm xgboost catboost scikit-learn"
   - activate test-environment
   - pip install "numpy>=1.13" "pyarrow>=0.12"
   - pip install -r requirements.txt

requirements-ml.txt

@@ -1,5 +1,4 @@
 catboost
 lightgbm
-xgboost
 scikit-learn
 annoy