gnu: Remove r-spatstat-core.

In 2022 spatstat.core was replaced with spatstat.explore and spatstat.model.

See https://spatstat.org/2022/11/10/spatstat.core-split.html

* gnu/packages/cran.scm (r-spatstat-core): New variable.

Change-Id: I2193626f0c2346f3b2793026059c5fbc97d2c4d2

gnu/packages/cran.scm

@@ -47765,40 +47765,6 @@ user-level code from spatstat which performs geometrical operations, except
 for the geometry of linear networks.")
     (license license:gpl2+)))
 
-(define-public r-spatstat-core
-  (package
-    (name "r-spatstat-core")
-    (version "2.4-4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (cran-uri "spatstat.core" version))
-       (sha256
-        (base32
-         "0fyi8y1z919nzn47kaviln7gflhcp5qdi3gfvf7nwkdix3pkk373"))))
-    (properties `((upstream-name . "spatstat.core")))
-    (build-system r-build-system)
-    (propagated-inputs
-     (list r-abind
-           r-goftest
-           r-matrix
-           r-mgcv
-           r-nlme
-           r-rpart
-           r-spatstat-data
-           r-spatstat-geom
-           r-spatstat-random
-           r-spatstat-sparse
-           r-spatstat-utils
-           r-tensor))
-    (native-inputs (list r-spatstat-model))
-    (home-page "https://spatstat.org/")
-    (synopsis "Core functionality of the spatstat package")
-    (description
-     "This is a subset of the original spatstat package, containing all of the
-user-level code from spatstat, except for the code for linear networks.")
-    (license license:gpl2+)))
-
 (define-public r-spatstat-linnet
   (package
     (name "r-spatstat-linnet")