bt: make VINTF target level specify by device

Bug: 277188108
Change-Id: Ia37bad45ed53f55f2289dab0cb25f36f22230290
diff --git a/bcmbt/compatibility_matrix.xml b/bcmbt/compatibility_matrix.xml
index f0a2a05..1a63ccf 100644
--- a/bcmbt/compatibility_matrix.xml
+++ b/bcmbt/compatibility_matrix.xml
@@ -1,4 +1,4 @@
-<compatibility-matrix version="1.0" type="framework" level="7">
+<compatibility-matrix version="1.0" type="framework">
     <hal format="aidl" optional="true">
         <name>vendor.google.bluetooth_ext</name>
         <version>1</version>