CppunitTest_sw_ooxmlexport: move sdr-related tests to the dedicated suite

Given that CppunitTest_sw_ooxmlexport and
CppunitTest_sw_ooxmlsdrexport run in parallel, the
CppunitTest_sw_ooxmlsdrexport is way smaller, moving stuff from
CppunitTest_sw_ooxmlexport to CppunitTest_sw_ooxmlsdrexport speeds up a
toplevel 'make' a bit.

Change-Id: I97297404bc3a02b6ca65552670edf16137deb264