Reduce log level on setLockTypes warning in openssl 1.1.0.

Summary: We do not need this spammy logging.

Reviewed By: siyengar, mingtaoy

Differential Revision: D13950327

fbshipit-source-id: 6fc91d3efa27d2d88ab7571233ce04a6e28b15f7

folly/ssl/detail/OpenSSLThreading.cpp

@@ -54,7 +54,7 @@ static std::map<int, LockType>& lockTypes() {
 
 void setLockTypes(std::map<int, LockType> inLockTypes) {
 #if FOLLY_SSL_DETAIL_OPENSSL_IS_110
-  LOG(INFO) << "setLockTypes() is unsupported on OpenSSL >= 1.1.0. "
+  VLOG(3) << "setLockTypes() is unsupported on OpenSSL >= 1.1.0. "
           << "OpenSSL now uses platform native mutexes";
 #endif