remove Auditee self-check

For convenience, we implemented support for a basic verification of the
attestation on the Auditee side. However, this needs to go away as part
of giving the Auditor side including our remote attestation service more
visibility into why failures are happening.

Removing this has been planned for a long time but didn't happen until
now due to since it wasn't as trivial to remove before
228d629.

app/src/main/java/app/attestation/auditor/AttestationProtocol.java

@@ -1393,13 +1393,6 @@ static AttestationResult generateSerialized(final Context context, final byte[]
                 attestationCertificates = getCertificateChain(keyStore, attestationKeystoreAlias);
             }
 
-            // sanity check on the device being verified before sending it off to the verifying device
-            verifyStateless(attestationCertificates, challenge, hasPersistentKey,
-                    new byte[][]{readRawResource(context, R.raw.google_root_0),
-                        readRawResource(context, R.raw.google_root_1),
-                        readRawResource(context, R.raw.google_root_2),
-                        readRawResource(context, R.raw.google_root_3)});
-
             // OS-enforced checks and information
 
             final DevicePolicyManager dpm = context.getSystemService(DevicePolicyManager.class);