Removed a few remaining Cg related files

They were not being used anywhere, cleaning them up.

Change-Id: I4ce1f11f92e0259fb69648d7a0e58dd26f4cb28f
Added caching to temporal interpolator.

The temporal interpolator did not cache its input, causing it
to request the input repeatedly when streaming over time. Fixed.

Change-Id: Iacb8219f8ec95bc04f69ab301eb4ccb606a6873e
Remove usage of the keyword with to allow old python

Change-Id: I9661715be9fee31060c1959d4044c953d3d88185
Merge topic 'temporal-interpolator-caching' into master

ad3b1a24 Added caching to temporal interpolator.
Merge topic 'fix-test-for-old-python' into master

3e71420c Remove usage of the keyword with to allow old python
Merge topic 'remove-cg-remains' into master

47bcdf2f Removed a few remaining Cg related files