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>

libgdither.spec

@@ -55,9 +55,6 @@ sed -i -e 's|%{_prefix}/lib|%{_libdir}|' \
 %check
 make test CFLAGS="${RPM_OPT_FLAGS} -Werror --std=c99 -I%{_builddir}/%{?buildsubdir}"
 
-%clean
-rm -rf $RPM_BUILD_ROOT
-
 
 %post -p /sbin/ldconfig