Remove annotations with constexpr params

These are not used anywhere in the tree and are hence not supported.
These are being removed from hidl-gen so this code is being removed.

Bug: N/A
Test: hidl-gen -Lcheck android.hardware.tests.expression@1.0
Change-Id: Ia19746da8ba361c7f29cc8732058a27cdc7a1bfe
2 files changed