wlc: make VINTF target level specify by device

Bug: 277188108
Change-Id: I27d067a5ad3b7ee0e421f31eeadb0e45688c6a92
diff --git a/wireless_charger/compatibility_matrix.xml b/wireless_charger/compatibility_matrix.xml
index d0adcde..85ee65a 100644
--- a/wireless_charger/compatibility_matrix.xml
+++ b/wireless_charger/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.wireless_charger</name>
         <version>1</version>