Remove unused bus variable.

src/meter_multical21.cc

@@ -87,8 +87,6 @@ private:
     bool has_flow_temperature_ {};
     double external_temperature_c_ { 127 };
     bool has_external_temperature_ {};
-
-    int expected_version_ {}; // 0x1b for Multical21 and 0x1d for FlowIQ3100
 };
 
 MeterMultical21::MeterMultical21(MeterInfo &mi, MeterType mt) :

src/meters_common_implementation.h

@@ -93,7 +93,6 @@ private:
     TPLSecurityMode expected_tpl_sec_mode_ {};
     string name_;
     vector<string> ids_;
-    WMBus *bus_ {};
     vector<function<void(Telegram*,Meter*)>> on_update_;
     int num_updates_ {};
     time_t datetime_of_update_ {};