Remove Safari 12.1 from CI integration tests

Author: matus-tomlein

trackers/javascript-tracker/test/wdio.sauce.conf.ts

@@ -64,14 +64,6 @@ export const config: Partial<Options.Testrunner> = {
  build: buildName,
  },
  },
- {
- browserName: 'safari',
- browserVersion: '12.1',
- platformName: 'macOS 10.13',
- 'sauce:options': {
- build: buildName,
- },
- },
  ],
  services: [
  [