[Filter/TFLite] Fix delegates deleter usage

[Filter/TFLite] Fix delegates deleter usage

On pipeline stop, crash in TFLite filter may be seen with some
delegates with log signature:

Setting pipeline to NULL ...
free(): invalid pointer

Pipeline termination procedure is then aborted.

TFlite delegates shall be released by specific deleter, provided
by their respective interface.
TFLite filter implementation manages delegates instance with
smart pointers for automatic disposal when interpreter goes out of
of scope.

Care should be taken to bind relevant delegate deleter to the
smart pointer, otherwise trivial deleter is used for the managed
pointer which may crash.

Signed-off-by: Julien Vuillaumier <julien.vuillaumier@nxp.com>