libqmi-glib,device: remove redundant messages

If we don't have traces enabled, these logs are not giving any
valuable information, so just remove them.

    22:17:46:0058 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0122 Qmi [/dev/cdc-wdm2] Received MBIM message
    22:17:46:0186 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0186 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0186 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0186 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
    22:17:46:0187 Qmi [/dev/cdc-wdm2] sending message as MBIM...
1 file changed