Avoid creating verified methods for non quickening filters

Filters that don't do either quickening or compiling don't need
verified methods. Avoiding allocating these saves a non-trivial
amount of RAM during compilation.

Before (PSS compiling a very large app):
Peak PSS: 215014K, native RAM 59378392B

After:
Peak PSS: 207815K, native RAM 52917928B

Bug: 63467744
Test: Compile an app with compiler-filter=verify
Test: test-art-host

Change-Id: I493a1c4a8a152b835d5e950192974c4da5b96ae3