cppflags: rm OPENDHT_PROXY_OPENSSL last occurences

CMakeLists.txt

@@ -75,7 +75,6 @@ if (OPENDHT_PROXY_SERVER OR OPENDHT_PROXY_CLIENT)
         if (OPENSSL_FOUND)
             message(STATUS "Found OpenSSL ${OPENSSL_VERSION}")
             include_directories(${OPENSSL_INCLUDE_DIRS})
-            add_definitions(-DOPENDHT_PROXY_OPENSSL)
         else ()
             message(SEND_ERROR "OpenSSL is required for DHT proxy as specified")
         endif()

configure.ac

@@ -147,7 +147,6 @@ AS_IF([test "x$with_openssl" != "xno"],
       [have_openssl=no])
 AS_IF([test "x$have_openssl" = "xyes"], [
     AC_MSG_NOTICE([Using OpenSSL])
-    CPPFLAGS+=" -DOPENDHT_PROXY_OPENSSL=1"
 ], [
     AC_MSG_NOTICE([Not using OpenSSL])
 ])

include/opendht/http.h

@@ -19,9 +19,7 @@
 #pragma once
 
 #include <asio.hpp>
-#ifdef OPENDHT_PROXY_OPENSSL
 #include "asio/ssl.hpp"
-#endif
 #include <json/json.h>
 #include <http_parser.h>
 #include <restinio/all.hpp>
@@ -200,10 +198,8 @@ public:
     unsigned int id() const;
     void set_connection(std::shared_ptr<Connection> connection);
     std::shared_ptr<Connection> get_connection() const;
-#ifdef OPENDHT_PROXY_OPENSSL
-    void set_certificate(std::shared_ptr<dht::crypto::Certificate> certificate);
-#endif
 
+    void set_certificate(std::shared_ptr<dht::crypto::Certificate> certificate);
     void set_logger(std::shared_ptr<dht::Logger> logger);
 
     /**