Remove URLRequestJob::GetResponseCode implementations from some tests.

chrome/browser/ssl/ssl_browser_tests.cc

Index: chrome/browser/ssl/ssl_browser_tests.cc
diff --git a/chrome/browser/ssl/ssl_browser_tests.cc b/chrome/browser/ssl/ssl_browser_tests.cc
index 9bbf09a3a2d08454c0f0df78ea52cd223036300d..971b7148e75566bd0316e9aca61ea5c36b68897f 100644
--- a/chrome/browser/ssl/ssl_browser_tests.cc
+++ b/chrome/browser/ssl/ssl_browser_tests.cc
@@ -2878,8 +2878,6 @@ class DelayableNetworkTimeURLRequestJob : public net::URLRequestJob {
     return bytes_read;
   }
 
-  int GetResponseCode() const override { return 200; }
-
   void GetResponseInfo(net::HttpResponseInfo* info) override {
     std::string headers;
     headers.append(