Remove program setting `fAssertDSLObjectsReleased`.

This setting was meant to detect errors in hand-authored DSL programs,
where a DSL expression or statement object was instantiated but wasn't
actually added to the program.

The DSL parser always disabled this flag. We don't plan on creating
large hand-crafted DSL programs going forward. Also, if you fail to add
an expression/statement to your program, your program will be missing
part of its code, which is already pretty self-evident as errors go.

Change-Id: I4c7b89d1f05cc65dc84948d98da8d6576c1be244
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/541739
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
5 files changed