gnu: python-rarfile: Update to 2.8.

* gnu/packages/python.scm (python-rarfile, python2-rarfile): Update to 2.8.
[source]: Remove obsolete patch.
* gnu/packages/patches/python-rarfile-fix-tests.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu/local.mk

@@ -827,7 +827,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/python-file-double-encoding-bug.patch	\
   %D%/packages/patches/python-fix-tests.patch			\
   %D%/packages/patches/python-parse-too-many-fields.patch	\
-  %D%/packages/patches/python-rarfile-fix-tests.patch		\
   %D%/packages/patches/python2-rdflib-drop-sparqlwrapper.patch	\
   %D%/packages/patches/python-statsmodels-fix-tests.patch	\
   %D%/packages/patches/python-configobj-setuptools.patch	\

gnu/packages/patches/python-rarfile-fix-tests.patch

@@ -1,14 +0,0 @@
-There is no test.sh, but there are test1.sh and test2.sh.
-
-diff --git a/test/Makefile b/test/Makefile
-index 027bc5f..5383db3 100644
---- a/test/Makefile
-+++ b/test/Makefile
-@@ -1,5 +1,6 @@
- test:
--	./test.sh
-+	./test1.sh
-+	./test2.sh
- 
- clean:
- 	rm -rf __pycache__

gnu/packages/python.scm

@@ -9816,15 +9816,13 @@ module, adding support for Unicode strings.")
 (define-public python-rarfile
   (package
     (name "python-rarfile")
-    (version "2.7")
+    (version "2.8")
     (source (origin
               (method url-fetch)
               (uri (pypi-uri "rarfile" version))
               (sha256
                (base32
-                "0d8n1dlpiz7av8dmbp0vclrwl9cnxizr4f2c9xvj1h5nvn480527"))
-              ;; https://github.com/markokr/rarfile/pull/17/
-              (patches (search-patches "python-rarfile-fix-tests.patch"))))
+                "0qfad483kcbga0bn4qmcz953xjk16r52fahiy46zzn56v80y89ra"))))
     (build-system python-build-system)
     (arguments
      '(#:phases