Delete startup args txt files (#267)

* Delete startup args txt files

As per https://github.com/R2Northstar/NorthstarLauncher/pull/99 we no longer need them.
NorthstarLauncher should just auto-create them when missing.

* Strip deleting `ns_startup*.txt`

Files were deleted with previous commit so deleting them is no longer needed.

.github/workflows/build.yml

@@ -168,7 +168,6 @@ jobs:
       - name: Make package structure
         run: |
           mkdir -p thunderstore/dist/Northstar
-          rm northstar/ns_startup*.txt
           mv -v northstar/* thunderstore/dist/Northstar
           wget -O thunderstore/icon.png https://raw.githubusercontent.com/R2Northstar/Northstar/main/thunderstore/icon.png
           wget -O thunderstore/README.md https://raw.githubusercontent.com/R2Northstar/Northstar/main/thunderstore/README.md

release/ns_startup_args.txt

@@ -1 +0,0 @@
--multiple

release/ns_startup_args_dedi.txt

@@ -1 +0,0 @@
-+setplaylist private_match