removed unused delivery report

roles/matrix-sms-bridge/defaults/main.yml

@@ -127,8 +127,7 @@ matrix_sms_bridge_gammu_configuration: |
   ResetFrequency = {{ matrix_sms_bridge_gammu_reset_frequency }}
   debugLevel = 1
   LogFile = /data/log/smsd.log
-  DeliveryReport = log
-  DeliveryReportDelay = 7200
+  DeliveryReport = no
   HangupCalls = 1
   CheckBattery = 0