build: remove babel (#8929)

.vscode/launch.json

babel.config.json

jest.config.ts

lib/config/file.spec.ts

lib/manager/index.spec.ts

lib/platform/azure/index.ts

lib/platform/bitbucket-server/index.ts

lib/platform/bitbucket-server/types.ts

lib/platform/bitbucket-server/utils.ts

lib/platform/bitbucket/__snapshots__/index.spec.ts.snap

lib/platform/bitbucket/index.spec.ts

lib/platform/bitbucket/index.ts

lib/platform/bitbucket/utils.spec.ts

lib/platform/bitbucket/utils.ts

lib/util/html.spec.ts

lib/versioning/maven/index.spec.ts

lib/versioning/node/index.spec.ts

package.json

tsconfig.app.json

yarn.lock