edge_control: remove PDM library from build

Author: pennam

edge.variables

@@ -1,5 +1,5 @@
 export FLAVOUR="edge"
 export VARIANTS=("EDGE_CONTROL")
 export FQBNS=("edge_control")
-export LIBRARIES=("SocketWrapper GSM GPS PDM SPI Wire MRI USBHID USBMSD ThreadDebug Scheduler")
+export LIBRARIES=("SocketWrapper GSM GPS SPI Wire MRI USBHID USBMSD ThreadDebug Scheduler")
 export BOOTLOADERS=("EDGE_CONTROL")