[Forwardport] Function unnecessarily called multiple time

[gelanivishal]

Original Pull Request

#15346

The function is unnecessarily called multiple time.

Description

getCurrencySymbolsData() is called multiple times in the same file. Remove the extra call of the same function.

Fixed Issues (if relevant)

Issue Number - #15355

Manual testing scenarios

1. Check the page. Stores > Currency > Currency Symbols

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @vgelani. Thank you for your contribution.
Changes from your Pull Request will be available with the upcoming 2.3.0 release.