Stop using CertStore which is not compatible with PlzNavigate.

components/security_state/security_state_model_unittest.cc

Index: components/security_state/security_state_model_unittest.cc
diff --git a/components/security_state/security_state_model_unittest.cc b/components/security_state/security_state_model_unittest.cc
index 5806bebc13c44319cfcc0e27ce708f9f54d15aae..f0b7b77a1d627c9243de4ca82c6551ff57da47be 100644
--- a/components/security_state/security_state_model_unittest.cc
+++ b/components/security_state/security_state_model_unittest.cc
@@ -65,7 +65,6 @@ class TestSecurityStateModelClient : public SecurityStateModelClient {
     state->connection_info_initialized = true;
     state->url = GURL(kUrl);
     state->initial_security_level = initial_security_level_;
-    state->cert_id = 1;
     state->cert_status = cert_status_;
     state->connection_status = connection_status_;
     state->security_bits = 256;