Remove missing path causing warning

This is causing a warning when we read Android.mk files:

find: ‘tools/tradefederation/contrib/prod-tests/res/config’: No such file or directory

It will soon be an error.

Test: diff out/build-marlin.ninja before & after
Change-Id: Ib2eb43216cd8b362959b6e829f3e8f854dbf9ac8
1 file changed
tree: 9a96fcff6cd55bdf8309d110f1f21d450ff36280
  1. res/
  2. src/
  3. .gitignore
  4. Android.mk
  5. MANIFEST.mf
  6. OWNERS
  7. README
  8. README.txt