Revert "Freezing face api"

This reverts commit b3a55af391480820e8688b1a6baf89da39e7ce63.

Reason for revert: Potential culprit for b/315354499 - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Change-Id: Iab8a208df0704007b9ee29a3673c623eb968ce1b
diff --git a/compatibility_matrices/compatibility_matrix.8.xml b/compatibility_matrices/compatibility_matrix.8.xml
index 777eb84..9057788 100644
--- a/compatibility_matrices/compatibility_matrix.8.xml
+++ b/compatibility_matrices/compatibility_matrix.8.xml
@@ -116,7 +116,7 @@
     </hal>
     <hal format="aidl" optional="true" updatable-via-apex="true">
         <name>android.hardware.biometrics.face</name>
-        <version>3-4</version>
+        <version>3</version>
         <interface>
             <name>IFace</name>
             <instance>default</instance>