Remove %clean section

None of currently supported distributions need that.
Last one was EL5 which is EOL for a while.

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

neon.spec

@@ -53,9 +53,6 @@ sed -ri "/^dependency_libs/{s,-l[^ ']*,,g}" \
 
 %find_lang %{name}
 
-%clean
-rm -rf $RPM_BUILD_ROOT
-
 %post -p /sbin/ldconfig
 
 %postun -p /sbin/ldconfig