Changed zero padded days to no padded days in date_format

What does this MR do?

Changed zero padded days to no padded days in date_format so that calendar spec tests will pass.

Specs were failing because it was looking for Saturday Oct 01, 2016 when it should have been looking for Saturday Oct 1, 2016

Are there points in the code the reviewer needs to double check?

None

Why was this MR needed?

Fixes failing test

Screenshots (if relevant)

None

Does this MR meet the acceptance criteria?

• Tests
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if you do - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #22861 (closed)