Remove TagCanon

The canon/Android.mk was being shadowed by the Android.mk in
the parent directory, so has not been read for many years.

It doesn't appear to build, though that could likely be fixed
easily, but given it hasn't been build since 2012 I think it's
better to just delete it.

Test: presubmit
Exempt-From-Owner-Approval: owner unresponsive
Change-Id: If089fc11070895ed1e046bfd003a715464b5ba24
5 files changed
tree: 836c0ef4a2f01cb1425f394f9bb26b0c227a1978
  1. res/
  2. src/
  3. Android.mk
  4. AndroidManifest.xml
  5. OWNERS