Delete support for HIDL V3.8

- HIDL camera device@3.8, metadata@3.8 were temporary interfaces

Bug: 221108824

Test: Use GCA (basic validity)

Merged-In: If9ecf3a243dcbf827b8b24f8abd9ae90fc41ba46
Change-Id: If9ecf3a243dcbf827b8b24f8abd9ae90fc41ba46
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>