🔥 Remove unused variables from test files

[mohammadrasoulasghari]

🧹 Remove unused variables from test files

In this PR I removed several unnecessary variables from test classes that were not being used. These variables were declared but never utilized in the test logic🧹.

Removing them helps with:

1. Maintainability - cleaner code is easier to understand and modify
2. Readability - less cognitive load when reviewing tests
3. Code quality - follows best practices by eliminating dead code

This change doesn't affect test functionality - all tests continue to pass successfully.

Updates:

1. remove additional variable form src/Traits/HasPermissions.php
2. replaced assertTrue(count() > 0) with assertNotEmpty() for better readability and more descriptive test failures.📝

[drbyte]

Thanks. However, several of the variables you've removed, while not used once defined, serve as documentation and clarification within the tests.