simpleperf: Stop building 32-bit binary on host 32-bit simpleperf binary isn't needed on host. So stop building it, to avoid needing 32-bit libsimpleperf_readelf on host. Bug: 267670561 Test: mmma system/extras/simpleperf Change-Id: Ib4ed2b94f9c177b40ea797b66e076af3b6f12425