SWDEV-496392 - Remove references to ASIC Polaris22 in pal::Settings and pal::Device (it is being retired)

Change-Id: I6318abf3e46ed250d087a3d2266d2ae3d4c8c000

rocclr/device/pal/palsettings.cpp

@@ -244,7 +244,6 @@ bool Settings::create(const Pal::DeviceProperties& palProp,
     case Pal::AsicRevision::Polaris10:
     case Pal::AsicRevision::Polaris11:
     case Pal::AsicRevision::Polaris12:
-    case Pal::AsicRevision::Polaris22:
       // Keep this false even though we have support
       // singleFpDenorm_ = true;
       viPlus_ = true;