Extra linking against sofficeapp

...already included via gb_CppunitTest_use_library_objects

Change-Id: I4135a48c2ed60a36c15c85bf3720a3080e70837e
Reviewed-on: https://gerrit.libreoffice.org/35716Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

desktop/CppunitTest_desktop_app.mk

@@ -34,7 +34,6 @@ $(eval $(call gb_CppunitTest_use_libraries,desktop_app, \
     salhelper \
     sb \
     sfx \
-    sofficeapp \
     svl \
     svx \
     svxcore \