Remove dead code from StepExecutor::startComputeOnDevice().

StepExecutor::startComputeOnDevice() contained code to handle a missing
mPreparedModel by compiling on demand.  This was a relic from when there
were paths through the NNAPI runtime that did not do partitioned
compilation and execution.

Bug: 132323763

Test: NeuralNetworksTest_static
Merged-In: I8a1e464a3371bddbdc1cb55d1778f7a346f835ba
Change-Id: I8a1e464a3371bddbdc1cb55d1778f7a346f835ba
(cherry picked from commit 2f9a2814e2bb1b32a9e4d513919352d8196e5425)
1 file changed
tree: 7b4ea50fc6f28bc3c14a36662c88d77585218b93
  1. nn/
  2. .clang-format
  3. CleanSpec.mk
  4. OWNERS
  5. PREUPLOAD.cfg