Removes UI Tests status badge (#345)

Removes UI Tests status badge as these tests are not being kept up-to-date because of issues with latest Xcode versions.

README.md

@@ -7,7 +7,6 @@ Runestone uses GitHub's [Tree-sitter](https://tree-sitter.github.io/tree-sitter/
 [![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fsimonbs%2FRunestone%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/simonbs/Runestone)
 [![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fsimonbs%2FRunestone%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/simonbs/Runestone)
 [![Build and Test](https://github.com/simonbs/Runestone/actions/workflows/build_and_test.yml/badge.svg)](https://github.com/simonbs/Runestone/actions/workflows/build_and_test.yml)
-[![UI Tests](https://github.com/simonbs/Runestone/actions/workflows/ui_tests.yml/badge.svg)](https://github.com/simonbs/Runestone/actions/workflows/ui_tests.yml)
 [![SwiftLint](https://github.com/simonbs/Runestone/actions/workflows/swiftlint.yml/badge.svg)](https://github.com/simonbs/Runestone/actions/workflows/swiftlint.yml)
 [![CodeQL](https://github.com/simonbs/Runestone/actions/workflows/codeql.yml/badge.svg)](https://github.com/simonbs/Runestone/actions/workflows/codeql.yml)
 [![Twitter](https://img.shields.io/badge/[email protected]?style=flat)](https://twitter.com/simonbs)