Remove the used_slots assertion from VtsHalWeaverTargetTest

Since fixing the boot-time issues in OMAPI based Weaver HALs has proven
to be more difficult than expected, for now the
config_disableWeaverOnUnsecuredUsers option is being added as a
workaround.  It weakens the security benefit of Weaver, but it's better
than not being able to enable Weaver at all.  As a result of supporting
this option, the !used_slots.empty() assertion has to be removed.

Bug: 368151356
Test: mmm hardware/interfaces/weaver
Change-Id: I2b06e477ee276296e2f8216c2ee99f4c526005a5
diff --git a/weaver/vts/VtsHalWeaverTargetTest.cpp b/weaver/vts/VtsHalWeaverTargetTest.cpp
index 8952dfc..faa8416 100644
--- a/weaver/vts/VtsHalWeaverTargetTest.cpp
+++ b/weaver/vts/VtsHalWeaverTargetTest.cpp
@@ -220,13 +220,10 @@
             used_slots.insert(slot);
         }
     }
-    // Starting in Android 14, the system will always use at least one Weaver slot if Weaver is
-    // supported at all.  This is true even if an LSKF hasn't been set yet, since Weaver is used to
-    // protect the initial binding of each user's synthetic password to ensure that binding can be
-    // securely deleted if an LSKF is set later.  Make sure we saw at least one slot, as otherwise
-    // the Weaver implementation must have a bug that makes it not fully usable by Android.
-    ASSERT_FALSE(used_slots.empty())
-            << "Could not determine which Weaver slots are in use by the system";
+
+    // We should assert !used_slots.empty() here, but that can't be done yet due to
+    // config_disableWeaverOnUnsecuredUsers being supported.  The value of that option is not
+    // accessible from here, so we have to assume it might be set to true.
 
     // Find the first free slot.
     int found = 0;