Remove PixelWifiOverlay2022 from factory build

With PixelWifiOverlay2022 in factory build, the overlays can be loaded
properly. Remove PixelWifiOverlay2022 and only add for normal build.

Test: overlays can be read properly in both normal and factory build
Bug: 228415213
Change-Id: I1ac9d8c020c6030e8a6f9759ae761e342adc956f
2 files changed