NNAPI HAL: Remove priority from prepareModelFromCache_1_3

prepareModelFromCache_1_3 uses model cache and data cache that
represent a prepared model. Any argument that contributes in a
meaningful way to the prepared model is implicitly included in
this model cache and data cache. For example, "model" and
"executionPreference" appear in prepareModel_1_3 but not in
prepareModelFromCache_1_3 because they are implicitly included
in the model cache and data cache. In a similar way, because
it could affect the resulting model, "priority" should be
removed from prepareModelFromCache_1_3.

Fixes: 148802784
Test: mma
Test: VtsHalNeuralnetworksV1_3TargetTest
Change-Id: I518e493ead8aa97220b16370cce8523b425c378c