Load all data workspace projects directly from workspace (#15921)

* Load all projects directly from workspace

* fixes

* Remove relativity and fix tests

* fix compile

* PR comments

* remove unused

* distro

extensions/sql-database-projects/src/projectProvider/projectProvider.ts

@@ -30,16 +30,6 @@ export class SqlDatabaseProjectProvider implements dataworkspace.IProjectProvide
 		return provider;
 	}
 
-	/**
-	 * Callback method when a project has been removed from the workspace view
-	 * @param projectFile The Uri of the project file
-	 */
-	RemoveProject(projectFile: vscode.Uri): Promise<void> {
-		// No resource release needed
-		console.log(`project file unloaded: ${projectFile.fsPath}`);
-		return Promise.resolve();
-	}
-
 	/**
 	 * Gets the supported project types
 	 */