Automating Adobe Premiere Pro for trimming videos based on volume level
Try the Auto Gate setting in the Dynamics audio effect. 
It will gate (turn off the audio) if the threshold of the audio falls below a specified level for a specified amount of time. 
Doing this manually would sound better but take longer. 
The gate won’t be able to tell the difference between a deliberate piece of speech and a mouth pop or click, so you may hear the gate open and close when you don’t want it to. 

https://helpx.adobe.com/in/premiere-pro/using/audio-effects-transitions.html

Note:It will not trim your clips, just affect whether you hear parts of them in your edit.