[dice] Remove unnecessary trait dice::InputValues

Bug: 267575445
Test: atest diced_utils_test diced_sample_inputs_test \
diced_test diced_vendor_test diced_client_test \
diced_open_dice_cbor_test

Change-Id: I6db68622c3ce1f3de040f9872e69482e3e0b1153
4 files changed