[sdk] Remove uses of ${garnet,peridot}_sdk_fidl

We no longer need these variables now that the FIDL files have been
moved to //sdk.

git grep -l '$garnet_sdk_fidl' | xargs -n 1 sed -i -e 's^$garnet_sdk_fidl^//sdk/fidl^'
git grep -l '$peridot_sdk_fidl' | xargs -n 1 sed -i -e 's^$peridot_sdk_fidl^//sdk/fidl^'

Test: Compiles.
Change-Id: Ib5ad4fe01358021dfc04c40f4ca31aa3b6f676e1
1 file changed
tree: fc5dc6c2f0f58e716bae01cf21bb3c28edeb2208
  1. peridot/