remove unneeded test reqs and add dummy check phase

OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-mobi?expand=0&rev=2

python-mobi.spec

@@ -26,9 +26,6 @@ URL:            https://github.com/iscc/mobi
 Source:         https://files.pythonhosted.org/packages/source/m/mobi/mobi-%{version}.tar.gz
 BuildRequires:  python-rpm-macros
 BuildRequires:  %{python_module setuptools}
-# SECTION test requirements
-BuildRequires:  %{python_module loguru >= 0.4}
-# /SECTION
 BuildRequires:  fdupes
 Requires:       python-loguru >= 0.4
 BuildArch:      noarch
@@ -48,6 +45,9 @@ Python library for unpacking unencrypted mobi files (forked from KindleUnpack)
 %python_clone -a %{buildroot}%{_bindir}/mobiunpack
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
+%check
+# test files are not installable
+
 %post
 %python_install_alternative mobiunpack