distutils-r1.eclass: Use python_has_version in ...enable_sphinx

Signed-off-by: Michał Górny <mgorny@gentoo.org>

eclass/distutils-r1.eclass

@@ -424,11 +424,9 @@ distutils_enable_sphinx() {
 		python_check_deps() {
 			use doc || return 0
 
-			local hasv_args=( -b )
-			[[ ${EAPI} == 6 ]] && hasv_args=( --host-root )
 			local p
 			for p in dev-python/sphinx "${_DISTUTILS_SPHINX_PLUGINS[@]}"; do
-				has_version "${hasv_args[@]}" "${p}[${PYTHON_USEDEP}]" ||
+				python_has_version "${p}[${PYTHON_USEDEP}]" ||
 					return 1
 			done
 		}