Remove Cypress & Playwright in their entirety (#12145)

.eslintrc.js

.github/workflows/cypress.yaml

.github/workflows/element-web.yaml

.gitignore

.percy.yml

README.md

cypress-ci-reporter-config.json

cypress.config.ts

cypress/e2e/dummy.spec.ts

cypress/e2e/utils.ts

cypress/fixtures/riot.png

cypress/global.d.ts

cypress/plugins/dendritedocker/index.ts

...ss/plugins/dendritedocker/templates/default/dendrite.yaml

cypress/plugins/docker/index.ts

cypress/plugins/index.ts

cypress/plugins/log.ts

cypress/plugins/mailhog/index.ts

cypress/plugins/synapsedocker/index.ts

cypress/plugins/synapsedocker/templates/COPYME/README.md