Remove PRODUCT_COMPATIBILITY_MATRIX_LEVEL_OVERRIDE

Replace it with FCM Version = 2, specified explicitly
in device manifest.

Test: builds
Bug: 69636193

Change-Id: I0f5689344bb7b10b2b5db2549e95c940c4812f9d
diff --git a/device.mk b/device.mk
index a36292b..085e626 100755
--- a/device.mk
+++ b/device.mk
@@ -53,7 +53,6 @@
 
 PRODUCT_CHARACTERISTICS := nosdcard
 PRODUCT_SHIPPING_API_LEVEL := 26
-PRODUCT_COMPATIBILITY_MATRIX_LEVEL_OVERRIDE := 27
 
 DEVICE_PACKAGE_OVERLAYS += $(LOCAL_PATH)/overlay
 
diff --git a/manifest.xml b/manifest.xml
index 1a3aca8..1af6c6f 100644
--- a/manifest.xml
+++ b/manifest.xml
@@ -1,4 +1,4 @@
-<manifest version="1.0" type="device">
+<manifest version="1.0" type="device" target-level="2">
     <hal format="hidl">
         <name>android.hardware.audio</name>
         <transport>hwbinder</transport>