Remove .npmrc and nuget.config files

.npmrc

@@ -1,3 +0,0 @@
-registry=https://registry.npmjs.org/
-@jellyfin:registry=https://pkgs.dev.azure.com/jellyfin-project/jellyfin/_packaging/unstable/npm/registry/
-always-auth=true

nuget.config

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-    <packageSources>
-        <add key="NuGet official package source" value="https://api.nuget.org/v3/index.json" />
-    </packageSources>
-</configuration>