BUG/MINOR: ssl: CO_FL_EARLY_DATA removal is managed by stream

Manage BoringSSL early_data as it is with openssl 1.1.1.
diff --git a/src/ssl_sock.c b/src/ssl_sock.c
index da6f2de..da1aecb 100644
--- a/src/ssl_sock.c
+++ b/src/ssl_sock.c
@@ -5386,7 +5386,7 @@
 				if (ret > 0)
 					conn->flags |= CO_FL_EARLY_DATA;
 			} else {
-				conn->flags &= ~(CO_FL_EARLY_SSL_HS | CO_FL_EARLY_DATA);
+				conn->flags &= ~(CO_FL_EARLY_SSL_HS);
 			}
 		}
 #endif