Fix scripts for first usage

set-device

@@ -22,7 +22,7 @@ function link_device_directory {
         DIR="../$1"
     fi
     echo "Linking main/device to $DIR"
-    rm "main/device"
+    rm "main/device" || true
     ln -s "$DIR" "main/device"
     touch --no-create "device/device_config.h"
     touch --no-create "device/device_main.cpp"

set-environment

@@ -18,7 +18,7 @@ function link_environment {
         TARGET="../$1"
     fi
     echo "Linking main/environment.h to $TARGET"
-    rm "main/environment.h"
+    rm "main/environment.h" || true
     ln -s "$TARGET" "main/environment.h"
     touch --no-create "main/environment.h"
 }