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/biometrics/face/aidl/Android.bp b/biometrics/face/aidl/Android.bp
index efd114a..6c8cd78 100644
--- a/biometrics/face/aidl/Android.bp
+++ b/biometrics/face/aidl/Android.bp
@@ -60,16 +60,8 @@
                 "android.hardware.keymaster-V4",
             ],
         },
-        {
-            version: "4",
-            imports: [
-                "android.hardware.biometrics.common-V3",
-                "android.hardware.common-V2",
-                "android.hardware.keymaster-V4",
-            ],
-        },
 
     ],
-    frozen: true,
+    frozen: false,
 
 }