diff --git a/arduino-ide-extension/src/browser/arduino-workspace-resolver.ts b/arduino-ide-extension/src/browser/arduino-workspace-resolver.ts
deleted file mode 100644
index 547e4422..00000000
--- a/arduino-ide-extension/src/browser/arduino-workspace-resolver.ts
+++ /dev/null
@@ -1,68 +0,0 @@
-import { URI } from '@theia/core/shared/vscode-uri';
-import { isWindows } from '@theia/core/lib/common/os';
-import { notEmpty } from '@theia/core/lib/common/objects';
-import { MaybePromise } from '@theia/core/lib/common/types';
-
-/**
- * Class for determining the default workspace location from the
- * `location.hash`, the historical workspace locations, and recent sketch files.
- *
- * The following logic is used for determining the default workspace location:
- * - `hash` points to an existing location?
- *  - Yes
- *   - `validate location`. Is valid sketch location?
- *    - Yes
- *     - Done.
- *    - No
- *     - `try open recent workspace roots`, then `try open last modified sketches`, finally `create new sketch`.
- *  - No
- *   - `try open recent workspace roots`, then `try open last modified sketches`, finally `create new sketch`.
- */
-namespace ArduinoWorkspaceRootResolver {
-  export interface InitOptions {
-    readonly isValid: (uri: string) => MaybePromise<boolean>;
-  }
-  export interface ResolveOptions {
-    readonly hash?: string;
-    readonly recentWorkspaces: string[];
-    // Gathered from the default sketch folder. The default sketch folder is defined by the CLI.
-    readonly recentSketches: string[];
-  }
-}
-export class ArduinoWorkspaceRootResolver {
-  constructor(protected options: ArduinoWorkspaceRootResolver.InitOptions) {}
-
-  async resolve(
-    options: ArduinoWorkspaceRootResolver.ResolveOptions
-  ): Promise<{ uri: string } | undefined> {
-    const { hash, recentWorkspaces, recentSketches } = options;
-    for (const uri of [
-      this.hashToUri(hash),
-      ...recentWorkspaces,
-      ...recentSketches,
-    ].filter(notEmpty)) {
-      const valid = await this.isValid(uri);
-      if (valid) {
-        return { uri };
-      }
-    }
-    return undefined;
-  }
-
-  protected isValid(uri: string): MaybePromise<boolean> {
-    return this.options.isValid(uri);
-  }
-
-  // Note: here, the `hash` was defined as new `URI(yourValidFsPath).path` so we have to map it to a valid FS path first.
-  // This is important for Windows only and a NOOP on POSIX.
-  // Note: we set the `new URI(myValidUri).path.toString()` as the `hash`. See:
-  // - https://github.com/eclipse-theia/theia/blob/8196e9dcf9c8de8ea0910efeb5334a974f426966/packages/workspace/src/browser/workspace-service.ts#L143 and
-  // - https://github.com/eclipse-theia/theia/blob/8196e9dcf9c8de8ea0910efeb5334a974f426966/packages/workspace/src/browser/workspace-service.ts#L423
-  protected hashToUri(hash: string | undefined): string | undefined {
-    if (hash && hash.length > 1 && hash.startsWith('#')) {
-      const path = decodeURI(hash.slice(1)).replace(/\\/g, '/'); // Trim the leading `#`, decode the URI and replace Windows separators
-      return URI.file(path.slice(isWindows && hash.startsWith('/') ? 1 : 0)).toString();
-    }
-    return undefined;
-  }
-}