gnu: python-gpy: Move to machine-learning.

* gnu/packages/python-science.scm (python-gpy): Move from here ...
* gnu/packages/machine-learning.scm: ... to here.

Change-Id: Id1c8574c166014c87ffa484ea84f798eb7f53844

gnu/packages/python-science.scm

@@ -3751,54 +3751,6 @@ for parameterized model creation and handling.  Its features include:
 @end itemize")
     (license license:bsd-3)))
 
-(define-public python-gpy
-  (package
-    (name "python-gpy")
-    (version "1.13.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (pypi-uri "GPy" version))
-       (sha256
-        (base32 "083rl8nr4nmmr1pzn0g8gsc4wi9dnhj3jjhkwsssadm5vns5d0m3"))))
-    (build-system pyproject-build-system)
-    (arguments
-     (list
-      #:phases
-      #~(modify-phases %standard-phases
-          (add-after 'unpack 'compatibility
-            (lambda _
-              ;; This file uses Python 2 statements
-              (delete-file "GPy/testing/mpi_test__.py")
-              (substitute* "setup.py"
-                (("scipy>=1.3.0,<1.12.0")
-                 "scipy>=1.3.0,<=1.13.0"))
-              ;; Use numpy.exp because scipy.ext no longer exists
-              (substitute* "GPy/kern/src/sde_standard_periodic.py"
-                (("sp\\.exp") "np.exp"))
-              (substitute* "GPy/kern/src/sde_stationary.py"
-                (("sp\\.poly1d") "np.poly1d")
-                (("sp\\.roots") "np.roots")))))))
-    (native-inputs
-     (list python-cython
-           python-matplotlib
-           python-pods
-           python-pytest
-           python-setuptools
-           python-wheel))
-    (propagated-inputs
-     (list python-numpy
-           python-paramz
-           python-scipy
-           python-six))
-    (home-page "https://sheffieldml.github.io/GPy/")
-    (synopsis "The Gaussian Process Toolbox")
-    (description
-     "@command{GPy} is a Gaussian Process (GP) framework written in
-Python, from the Sheffield machine learning group.  GPy implements a range of
-machine learning algorithms based on GPs.")
-    (license license:bsd-3)))
-
 (define-public python-pods
   (package
     (name "python-pods")