Delete .swift-version

[SabinaHuseinova]

Description

Hello.
I deleted .swift-version file because it is deprecated.

Type of change

• Improvement.

How Has This Been Tested?

• Test iOS 15

Test Configuration

• Xcode Versions: Xcode 14.0
• Simulators: iPhone 8
• Physical Hardware: iPhone 7

Checklist:

• My code follows the style guidelines of this project
• My code does not break backwards compatibility with earlier versions of PulleyLib
• My code is fully functional with all supported device sizes and orientations
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have checked that my code does not break the behavior of the Sample/Demo app
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have tested and can prove my fix is effective or that my feature works