callcatcher: hide glTF methods from easy list

Change-Id: Id91272de715bbab7b3a18a1905ca593cf959422c
the OutDevState dtors are never called

regression since cf3c6cb40f99fa1761a6af3d7447a899b9447868

Change-Id: Iaeb44d948d3e0a0b26cfd3e16aa81b979cf56457
unnecessary to check for null before delete

Change-Id: I82b5c5ced8a4f0e719d1aeffed86845b9db1b68b