Remove subsonic-api package

This didn't end up being particularly helpful, so I've removed it.

Specifically, I had to construct my own URLs for retrieving media, and in that case I'm basically implementing everything myself anyway.

This reverts commit beaec64abd.

package-lock.json

@@ -11,8 +11,7 @@
       "dependencies": {
         "musicbrainz-api": "^1.0.0",
         "react": "^19.2.0",
-        "react-dom": "^19.2.0",
-        "subsonic-api": "^3.2.0"
+        "react-dom": "^19.2.0"
       },
       "devDependencies": {
         "@eslint/js": "^9.39.1",
@@ -3181,15 +3180,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/subsonic-api": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/subsonic-api/-/subsonic-api-3.2.0.tgz",
-      "integrity": "sha512-BADBQ2hONdLb3agCiSDzNzTIFLWJAuxJTUJvC2zDFvXUVfnK3yy7r8xFu3NkrQl8p5UVI7q8Qfm62N1lFxWbww==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=18"
-      }
-    },
     "node_modules/supports-color": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",