Remove qcom vp8 encoder/decoder references

The vp8 components are only supported in the 8974 component registry,
remove them from the 8064s

Fixes android.media.cts.MediaCodecListTest#testComponentInstantiation
and android.media.cts.MediaCodecListTest#testGetCapabilities

Change-Id: I0353ccdf96ac8367a19fdaba19251e3b879d7d8e