>Is it possible to have the MS130-48P switches as a call Manager?
No.
> I will like to decommission the 3945 ISR, 3850 switch and the WLAN Controller
You can get rid of the WLAN controller.
As long as the 3850 is layer 2 only, or doing basic layer 3 (no dynamic routing protocols) you can get rid of it.
Cisco Meraki has no voice products. You'll be keeping the 3945 ISR.