With Kiwamu's blessing, I modifed the following LSC common files to ground all unused inputs of filter module with control parts
lsc/common/models/lscpsl.mdl
lsc/common/models/lscimc.mdl
These are common parts, so I have not committed the changes to SVN as this may break l1lsc. There appears to be a mismatch between the sites for these files which I'll let the ISC team resolve.
h1lsc0 now compiles with RCG2.9