Remove warning from createStudyAndScenario.bat

[aber-sandag]

Proposed changes

AB#2781
Remove warnings related to missing file and command usage from scenario creation output. Missing file warning related to unused solutions.mtbx toolbox

Impact

No functional impact, removes erroneous warning messages

Types of changes

What types of changes does your code introduce to ABM?
Put an x in the boxes that apply

• Bugfix (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 not work as expected)
• Documentation Update (if none of the other choices apply)

How has this been tested?

Please describe the tests that you ran to verify your changes.

• Ran scenario creation

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings