Removed unnecessary/brittle IT test checks

[davidjgonzalez]

Remove checking for error message values as these can change over time.

Motivation and Context

This check will break IT tests for WKND which will block AEM as a Cloud Service releases.

How Has This Been Tested?

Ran IT tests on AEM as a Cloud Service sandbox.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.