Remove timeout from IFingerprint generateChallenge

Bug: 181699471
Test: atest VtsHalBiometricsFingerprintTargetTest
Change-Id: I30e3ff213e34354310b77c9cffad3c46c3256dc7
diff --git a/biometrics/fingerprint/aidl/default/include/FakeFingerprintEngine.h b/biometrics/fingerprint/aidl/default/include/FakeFingerprintEngine.h
index 9343316..42e1aa5 100644
--- a/biometrics/fingerprint/aidl/default/include/FakeFingerprintEngine.h
+++ b/biometrics/fingerprint/aidl/default/include/FakeFingerprintEngine.h
@@ -22,7 +22,7 @@
 
 class FakeFingerprintEngine {
   public:
-    void generateChallengeImpl(ISessionCallback* cb, int32_t /*timeoutSec*/) {
+    void generateChallengeImpl(ISessionCallback* cb) {
         LOG(INFO) << "generateChallengeImpl";
         cb->onChallengeGenerated(0 /* challenge */);
     }
@@ -73,4 +73,4 @@
     }
 };
 
-}  // namespace aidl::android::hardware::biometrics::fingerprint
\ No newline at end of file
+}  // namespace aidl::android::hardware::biometrics::fingerprint