Reverts flutter/engine#53136
b/345642546 shows some massive performance regressions on this patch. i'll rework it so the conditions are only loosened on phones with one fast core.
For devices with 1 fast core, the current affinity set is less idea because it forces UI and raster on the same thread. Widen this to exclude slow cores instead of including only the fast core.
The newly rolled version of clang-tidy is warning about some accesses to std::optional values. The function does a has_value check before accessing the values, but the analyzer does not detect that.
https://github.com/flutter/flutter/issues/134452
This patch parses the speed of all CPU data out of /proc and constructs a table that allows us to request high level CPU affinities: performance, efficiency, and not performance. These affinties are applied where appropriate during Android thread construction.
