Remove usage of optimized reflection getters

As a part of internal libcore API cleanup some of the functions
previously exposed are getting removed from public surface.

This CL replaces usage of art optimized reflection methods with default
ones.

Bug: 154796679
Test: m droid
Change-Id: I14cfa4af95e2d4b34cee02decaec33d928c25b73
1 file changed