Fixed build [#CLICKHOUSE-2].

dbms/src/Client/PerformanceTest.cpp

@@ -518,7 +518,6 @@ public:
     }
 
 private:
-    unsigned concurrency;
     String test_name;
 
     using Query = String;
@@ -534,8 +533,6 @@ private:
 
     InterruptListener interrupt_listener;
 
-    double average_speed_precision = 0.001;
-
     using XMLConfiguration = Poco::Util::XMLConfiguration;
     using AbstractConfig = Poco::AutoPtr<Poco::Util::AbstractConfiguration>;
     using Config = Poco::AutoPtr<XMLConfiguration>;