spec: Remove pytest residuals in spec file

In order build properly on public copr, we drop all the pytest
build dependencies as it is not necessary to run the tests during the
build.

Signed-off-by: Vinzenz Feenstra <vfeenstr@redhat.com>

packaging/leapp.spec

@@ -89,11 +89,6 @@ BuildRequires:  python-setuptools
 %else # rhel <> 7 or fedora
 BuildRequires:  python2-devel
 BuildRequires:  python2-setuptools
-
-%if 0%{?fedora}
-BuildRequires:  python2-pytest-cov
-# BuildRequires:  python2-pytest-flake8
-%endif # fedora
 %endif # rhel <> 7
 
 Provides: leapp-framework = %{framework_version}
@@ -152,11 +147,6 @@ Summary: %{summary}
 BuildRequires:  python3-devel
 BuildRequires:  python3-setuptools
 
-%if 0%{?fedora}
-# Fedora
-BuildRequires:  python3-pytest-cov
-%endif
-
 Requires: leapp-framework-dependencies = %{framework_dependencies}
 
 # FIXME: avoiding problems with dependencies on virtual capabilities, see: