Remove all unused, legacy FDO build rules

There are no current users of this feature. All remaining references are
legacy scripts that aren't actually in-use today.

https://source.corp.google.com/search?q=BUILD_FDO_INSTRUMENT%20-file:build%2F
https://source.corp.google.com/search?q=LOCAL_FDO&ct=os&sq=package:%5Eandroid$

Test: build
Change-Id: I86ff6531a0868fb8e30741f0d04de1739fba4586