Revert of Add CheckOCSPDateValid() to net/cert/internal

net/cert/internal/parse_ocsp.cc

Index: net/cert/internal/parse_ocsp.cc
diff --git a/net/cert/internal/parse_ocsp.cc b/net/cert/internal/parse_ocsp.cc
index 21ce878b3cfc78b7b3f9a894850e6024eb579bf2..0243d9537b6216cdd4aa2854ee317f60a9bad2fa 100644
--- a/net/cert/internal/parse_ocsp.cc
+++ b/net/cert/internal/parse_ocsp.cc
@@ -7,7 +7,6 @@
 #include "base/sha1.h"
 #include "crypto/sha2.h"
 #include "net/cert/internal/parse_ocsp.h"
-#include "net/der/encode_values.h"
 
 namespace net {
 
@@ -530,28 +529,4 @@
   return found;
 }
 
-bool CheckOCSPDateValid(const OCSPSingleResponse& response,
-                        const base::Time& verify_time,
-                        const base::TimeDelta& max_age) {
-  der::GeneralizedTime verify_time_der;
-  if (!der::EncodeTimeAsGeneralizedTime(verify_time, &verify_time_der))
-    return false;
-
-  if (response.this_update > verify_time_der)
-    return false;  // Response is not yet valid.
-
-  if (response.has_next_update && (response.next_update <= verify_time_der))
-    return false;  // Response is no longer valid.
-
-  der::GeneralizedTime earliest_this_update;
-  if (!der::EncodeTimeAsGeneralizedTime(verify_time - max_age,
-                                        &earliest_this_update)) {
-    return false;
-  }
-  if (response.this_update < earliest_this_update)
-    return false;  // Response is too old.
-
-  return true;
-}
-
 }  // namespace net