Remove [jni_]link_type files

Now that mm/ONE_SHOT_MAKEFILE have been removed, we can expect to know
about all of our dependencies at the end of the build.

This removes 19k nodes from our build graph (aosp-master
aosp_arm64-eng), though in a default build, only 3k of those are used.

Test: ALLOW_MISSING_DEPENDENCIES=true, then trigger a missing dependency
Test: treehugger
Test: create link_type files, then apply CleanSpec.mk, ensure they're removed
Change-Id: I9506331e4a9911d2f26e59a2f72a97aef1644073