Remove enable_pixel_anisotropy_correction flag

Cleanup ContentRecorder from the flag usages.

Keep fields in LogicalDisplay and DisplayDevice as preparation for making anisotropy correction
configurable per-display.

Bug: 409604828
Bug: 375563565
Test: atest LogicalDisplayTest
Test: atest DisplayDeviceTest
Test: atest ContentRecorderTest
Change-Id: I8bc0b287fc57bfa9a03836c0ac834d112feb6c27
Flag: EXEMPT flag removal does not require flag