gnu: Remove python-pylint native-input from some packages.

Remove python-pylint from [native-inputs] in the following packages as
not required for build/tests/install:

* gnu/packages/games.scm (open-adventure)
* gnu/packages/potassco.scm (python-clingraph)
* gnu/packages/python-xyz.scm (python-lsp-jsonrpc, python-mediapy)
* gnu/packages/virtualization.scm (python-qemu-qmp)

Change-Id: I138d6ad7fbde00f76f77c14d728adce8d74f25bf
Signed-off-by: Sharlatan Hellseher <sharlatanus@gmail.com>

gnu/packages/games.scm

@@ -8410,7 +8410,6 @@ at their peak of economic growth and military prowess.
              cppcheck
              libedit
              pkg-config
-             python-pylint
              python-pyyaml
              python-wrapper)
        (if (supported-package? ruby-asciidoctor/minimal)

gnu/packages/potassco.scm

@@ -745,8 +745,7 @@ logic programs based on clingo.")
                              python-jsonschema
                              python-networkx
                              python-setuptools))
-    (native-inputs (list dot2tex graphviz python-pylint python-pytest
-                         python-wheel))
+    (native-inputs (list dot2tex graphviz python-pytest python-wheel))
     (home-page "https://github.com/potassco/clingraph")
     (synopsis "Visualizer for graphs defined as logic programs")
     (description

gnu/packages/python-xyz.scm

@@ -6985,7 +6985,6 @@ after Andy Lester’s Perl module WWW::Mechanize.")
                              python-pillow))
     (native-inputs
      (list python-flit-core
-           python-pylint
            python-pytest
            python-pytest-xdist))
     (home-page "https://github.com/google/mediapy")
@@ -10186,7 +10185,6 @@ which can produce feeds in RSS 2.0, RSS 0.91, and Atom formats.")
      (list python-coverage
            python-pycodestyle
            python-pyflakes
-           python-pylint
            python-pytest
            python-pytest-cov
            python-setuptools

gnu/packages/virtualization.scm

@@ -2241,7 +2241,6 @@ mainly implemented in user space.")
      (list python-avocado-framework
            python-flake8
            python-isort
-           python-pylint
            python-setuptools
            python-setuptools-scm
            python-wheel))