making changes to accomodate removing the pi user

birdnet.conf-defaults

@@ -69,7 +69,7 @@ PUSHED_APP_SECRET=
 ## it needs to analyze. Be sure this directory is readable and writable for
 ## the BIRDNET_USER. 
 
-RECS_DIR=/home/pi/BirdSongs
+RECS_DIR=$HOME/BirdSongs
 
 ## REC_CARD is the sound card you would want the birdnet_recording.service to 
 ## use. Leave this as "default" to use PulseAudio (recommended), or use
@@ -141,12 +141,7 @@ EXTRACTION_LENGTH=
 
 AUDIOFMT=mp3
 
-## BIRDNET_USER should be the non-root user systemd should use to execute each 
-## service.
-
-BIRDNET_USER=pi
-
 ## These are just for debugging
 LAST_RUN=
 THIS_RUN=
-IDFILE=/home/pi/BirdNET-Pi/IdentifiedSoFar.txt
+IDFILE=$HOME/BirdNET-Pi/IdentifiedSoFar.txt