core-app-api: removed deprecated GithubAuth.normalizeScopes

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

.changeset/tame-lions-know.md

@@ -0,0 +1,5 @@
+---
+'@backstage/core-app-api': minor
+---
+
+**BREAKING**: Removed the deprecated `GithubAuth.normalizeScopes` method.

packages/core-app-api/api-report.md

@@ -376,8 +376,6 @@ export type FlatRoutesProps = {
 export class GithubAuth {
   // (undocumented)
   static create(options: OAuthApiCreateOptions): typeof githubAuthApiRef.T;
-  // @deprecated (undocumented)
-  static normalizeScope(scope?: string): Set<string>;
 }
 
 // @public

packages/core-app-api/src/apis/implementations/auth/github/GithubAuth.ts

@@ -47,19 +47,4 @@ export default class GithubAuth {
       defaultScopes,
     });
   }
-
-  /**
-   * @deprecated This method is deprecated and will be removed in a future release.
-   */
-  static normalizeScope(scope?: string): Set<string> {
-    if (!scope) {
-      return new Set();
-    }
-
-    const scopeList = Array.isArray(scope)
-      ? scope
-      : scope.split(/[\s|,]/).filter(Boolean);
-
-    return new Set(scopeList);
-  }
 }