Call InstallFile even when !installable

Not calling InstallFile when !installable prevents the module not only
from being installed to the partition, but also from being packaged for
a packaging_base. InstallFile already has a routine for not generating
the install rule when the module is not installable. So, the check for
can be safely omitted at the call site.

Bug: 199674764
Test: m com.android.virt. the virt apex has
com.android.runtime.64only.apex in system/apex

Change-Id: I0249f5916496ed136dbf1978e04e2971852de244