archiver: fix srpm archiving build errors

archiver: fix srpm archiving build errors

srpm archiving doesn't need to be handled as a different case
when deciding what archive tasks to add.

When srpm is selected as the archiving type, the scripts and logs
archive staging directory ${WORKDIR}/script-logs is cleaned, and
its contents moved out to ${WORKDIR}.

Now that we are including ${WORKDIR}/script-logs in sstate-inputdirs,
the directory must be preserved.

[YOCTO #4032]

(From OE-Core rev: 0c80286a3383b436a0a63a0b00eb357dd9dea4fb)

Signed-off-by: Kevin Strasser <kevin.strasser@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>